MTN (Nigeria) Sim Card. I have tried on several cell-phones so the problem is the sim card. I can call and receive calls, I can receive texts, BUT I CANNOT SEND TEXTS. When I try to send I get the Not Delivered Error message.
I have been in touch with MTN customer Care. it takes well over an hour to get any answer and usually calls are suddenly cut off. they told me the Message Center Number must be wrong and sent me the correct one and the code to ring. I rang and discovered I already have the correct number. Any advice on what might be wrong and how to rectify it?