Poor service by MTN Customer Services

I receive a poor service from MTN from January 2021 till now with regard to now. Its been a year now since i lodge a complain regarding the contract i took which i open at Southgate Mall. I took a 24 month My MTNChoice contract on the 07/10/2020 for R299 a month only to be billed R8000,10 for the month of December. When i query in January 2021 i was told that the consultant who helped me did not set the SUL at zero at the point of sale. Since January 2021 till today i have beeb sent from pillar to post as people keeps on refering me to the store where they keep on telling me that it is out of their hand and refer me back to customer care. In August 2021 they sent me a worked out statement with some cancelation and ask me to pay R3000 and till now they are failling to tell me how did they come to that amount cause my line has been suspended all along.

It is the duty ofthe service provider to train their staff not the other way around. My credit profile has been affected by the poor service that i have received.