Mtn Head Office, Fairlands - SIM-SWAP SCANDAL

All my calls failed. On the 7th August 20202 MTN made a SIM-SWAP of my cell number for the unknown person. The unknown person did a huge scam, borrowing money from many people via smses and whatsapp, pretending to be myself. I have called MTN since on 8 August 2020 up to date but i am not answered as to who gave SWIM-SWAP to someone other than me.