Mtn incorrectly debit my account and I'm not getting a refund

Mtn. Has debited my account for R4999.95 instead on R499.95 I have called in numerous times my first call was on the 3rd of September 2025 and have been calling every 2nd 3rd day since then I keep have the agents been telling me it's still processing. I have sent my documents a few times that they have asked me and this inconvenience has caused my account to be on hold the whole month. I cannot pay for transport to and from work I cannot pay for things for my child eg, nappies and milk. I cannot get food for my home.. this month has been extremely difficult. All of these problems have been caused by mtn. I keep getting transaction fees by my bank because mtn has caused this. Mtn will not compensate me for all this which is giving me a bad credit score now for a complete month my debit orders cannot go off and now next month I have to pay double which will still inconvenience me. Im really struggling to have my refund in my account before the 25th of September I really don't know what else to do. Mtn has done the worst I have over 15 logged ticked numbers emails that I send my documents through. All I really want is my money back into my account..