Sim Swap impossible

I've been trying to do a sim swap for 2 weeks now and its a frustrating thing ever!! MTN please get your act right, first i did self service and passed the security and waited but nothing happened. Called and failed security questions and did an affidavit only to be told that what i wrote on the affidavit is wrong. Do your "service champions" even know what they are doing in that call centre??? what the hell am i supposed to write on the affidavit besides that i"ve lost my sim and need my old number back?? I'm so annoyed!!