MTN SIM SWAP DONE **********LY

I've recently had a sim swap done on my sim card **********ly and due to that i lost all the money in my bank account, i called Mtn customer and the lady told me to go the nearest Mtn store to report. Went to he nearest Mtn (Mall of the South) I was then told to go open a case, come back with a case number and an affidavit. I went there again the again to the same store and got a different lady who then said she didn't know anything about all this and called customer care. The lady on the line said there's nothing they can do to help.

I then went to the other store in the same Mall near Game. The guy told me to write an email to the ***** department and explain everything. I sent through an email and i have not heard anything from them. I want answers because of Mtn ********** were able to access money in my bank account and clean me out. I'd like to know how they were able to do a sim swap with my information and who assisted. What procedure was followed and what questions were asked.