First topic message reminder :
Just send ur date of Birth to 799.....in this format below
DD/MM/YYYY
08/06/1978
After confirmation of initial money (N400) by checking the balance (just dial *559#) then send the second command again to 799 before you make call with it.
Just send mother's maiden name in capital letter to 799 again...
MOTHER'S MAIDEN NAME (that is what you need to send, it not necessary you send your mother maiden name just the sentence) to 799
after confirmation of receiving the bonus just dial *559# for bonus balance from there you good to make that call to MTN number only till June first