If you are unable to get the 7.5gb Text Reset to 131 and try again
Make sure you have like N150 before you try it
To activate dial *131*2# > then reply with 5 to change
pin > enter 0000 as oldp in and 1234 as new pin. You'll receive message that your pin is change.
Now dial*131*3*5*4*3*re cipient number*1234# The person will receive 5.0GB + 2.5GBExtraData.
It's free with 30days validity.