Bad service and incorrect billing at MTN

I'm Noniko Dabula, residing in Gqeberha. In March 2022 I called MTN Customer service & made a 20G anytime data & 20G night express for R149. Later I was told that I'm supposed to pay more than R1000 monthly because MTN is adding a recurring data from my previous contract to a new contract, something I didn't agree with. I've been calling the customer service also going to MTN shop as from April, up to date to ask for assistance, also requesting a recording of that conversation. MTN Customer service & MTN Shop can't help me at all, all they do is to add to my billing more than R1000 monthly.

Can you please assist me regarding this matter.

Regards Noniko Dabula