sqlite database not creating tables

I am having some problem while using sqlite database, and can't seem to find out the cause for the error. I have the following class

public class Greetings {
//private variables
int _id;
String _phone_number;
String _time;
String _date;
String _message;

// Empty constructor
public Greetings(){

}
// constructor
public Greetings(int id, String date, String phone_number, String time, String message){
    this._id = id;
    this._date = date;
    this._phone_number = phone_number;
    this._time = time;
    this._message = message;
}

// constructor
public Greetings(String date, String phone_number, String time, String message){
    this._date = date;
    this._phone_number = phone_number;
    this._time = time;
    this._message = message;
}
// getting ID
public int getID(){
    return this._id;
}

// setting id
public void setID(int id){
    this._id = id;
}

// getting name
public String getDate(){
    return this._date;
}

// setting name
public void setDate(String date){
    this._date = date;
}

// getting phone number
public String getPhoneNumber(){
    return this._phone_number;
}

// setting phone number
public void setPhoneNumber(String phone_number){
    this._phone_number = phone_number;
}
// getting phone number
public String getTime(){
    return this._time;
}

// setting phone number
public void setTime(String time){
    this._time = time;
}

public String getMessage(){
    return this._message;
}

// setting phone number
public void setMessage(String message){
    this._message = message;
}

}

And the sqlitehelper class

public class SqliteController extends SQLiteOpenHelper{
private static final String LOGCAT = null;
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;

// Database Name
private static final String DATABASE_NAME = "sendGreetings";

//  table name
private static final String TABLE_GREETINGS = "greetings";

// Greetings Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_DATE = "date";
private static final String KEY_PH_NO = "phone_number";
private static final String KEY_TIME ="time";
private static final String KEY_MESSAGE ="message";

public SqliteController(Context context) {
    super(context, DATABASE_NAME, null, DATABASE_VERSION);
    Log.d(LOGCAT,"Created");
}

// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
    String CREATE_GREETINGS_TABLE = "CREATE TABLE " + TABLE_GREETINGS + "("
            + KEY_ID + " INTEGER PRIMARY KEY," + KEY_DATE + " TEXT,"
            + KEY_PH_NO + " TEXT," + KEY_TIME + "TEXT," + KEY_MESSAGE + "TEXT" + ")";
    db.execSQL(CREATE_GREETINGS_TABLE);
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    // Drop older table if existed
    db.execSQL("DROP TABLE IF EXISTS " + TABLE_GREETINGS);

    // Create tables again
    onCreate(db);
}
/**
 * All CRUD(Create, Read, Update, Delete) Operations
 */

// Adding new greetings
void addGreetings(Greetings greetings) {
    SQLiteDatabase db = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_DATE, greetings.getDate()); // Greetings Date
    values.put(KEY_PH_NO, greetings.getPhoneNumber()); // Greetings Phone
    values.put(KEY_TIME, greetings.getTime()); //Greetings time
    values.put(KEY_MESSAGE, greetings.getMessage());

    // Inserting Row
    db.insert(TABLE_GREETINGS, null, values);
    db.close(); // Closing database connection
}
// Getting single greeting
Greetings getGreeting(int id) {
    SQLiteDatabase db = this.getReadableDatabase();

    Cursor cursor = db.query(TABLE_GREETINGS, new String[] { KEY_ID,
                    KEY_DATE, KEY_PH_NO, KEY_TIME, KEY_MESSAGE }, KEY_ID + "=?",
            new String[] { String.valueOf(id) }, null, null, null, null);
    if (cursor != null)
        cursor.moveToFirst();

    Greetings greeting = new Greetings(Integer.parseInt(cursor.getString(0)),
            cursor.getString(1), cursor.getString(2),cursor.getString(3),cursor.getString(4));
    // return contact
    return greeting;
}
// Getting All Greetings
public List<Greetings> getAllGreetings() {
    List<Greetings> greetingList = new ArrayList<Greetings>();
    // Select All Query
    String selectQuery = "SELECT  * FROM " + TABLE_GREETINGS;

    SQLiteDatabase db = this.getWritableDatabase();
    Cursor cursor = db.rawQuery(selectQuery, null);

    // looping through all rows and adding to list
    if (cursor.moveToFirst()) {
        do {
            Greetings greeting = new Greetings();
            greeting.setID(Integer.parseInt(cursor.getString(0)));
            greeting.setDate(cursor.getString(1));
            greeting.setPhoneNumber(cursor.getString(2));
            greeting.setTime(cursor.getString(3));
            greeting.setMessage(cursor.getString(4));
            // Adding contact to list
            greetingList.add(greeting);
        } while (cursor.moveToNext());
    }

    // return greeting list
    return greetingList;
}
// Updating single greeting
public int updateGreetings(Greetings greeting) {
    SQLiteDatabase db = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_DATE, greeting.getDate());
    values.put(KEY_PH_NO, greeting.getPhoneNumber());
    values.put(KEY_TIME, greeting.getTime());
    values.put(KEY_MESSAGE, greeting.getMessage());

    // updating row
    return db.update(TABLE_GREETINGS, values, KEY_ID + " = ?",
            new String[] { String.valueOf(greeting.getID()) });
}
// Deleting single greeting
public void deleteGreetings(Greetings greeting) {
    SQLiteDatabase db = this.getWritableDatabase();
    db.delete(TABLE_GREETINGS, KEY_ID + " = ?",
            new String[] { String.valueOf(greeting.getID()) });
    db.close();
}
// Getting greetings Count
public int getGreetingsCount() {
    String countQuery = "SELECT  * FROM " + TABLE_GREETINGS;
    SQLiteDatabase db = this.getReadableDatabase();
    Cursor cursor = db.rawQuery(countQuery, null);
    cursor.close();

    // return count
    return cursor.getCount();
}

}

Every time I execute the program by calling the following code,

SqliteController db = new SqliteController(this);
    db.addGreetings(new Greetings(dt,txtPhoneNo,t,n));

I am getting the error "table greetings has no column named message" . Can someone help me figure out just where I am making a mistake. Thanks in advance