What is wrong with mtn secuirity number,anytime i call on customer care number (180) a voice msg will say type ur secuirity number and after typing it, d next tin u hear is "ur secuirity number is incorrect " I regreted hv dat secuirity number

Next time ignore d security number MTN send to you press the first four digit number that start your phone number two times then u press your last four digit number, that's what have been using and it work for me

Tnx alot i will give it a try