False early upgrade nightmare

So MTN South Africa debited R8800 from my account because I apparently requested an early upgrade(I did not)… I reversed the payment, went to MTN South Africa (white house) could not be assisted and said the upgrade was done by @SummerMobile (which they distance themselves from but the agents always say they are calling on behalf of MTN). Spoke to the manager of Summer Mobile and she said there was nothing about an early upgrade from their side… I have been sent from pillar to post regarding this issue, no one is willing to assist me. I’ve sent emails, called and I have still not been assisted.

MTN South Africa is now calling about how my account is in arrears but they have not gotten back to me with a solution.