Unfair customer treatment

In November 2023 I took contract with mtn which was R399 per month, I only got to pay such amount for only 2 months after that I founded myself paying 439 per month, I tried to go to mtn Galleria but did not get any help but instructed to call mtn head office which I get no joy because I got to be pushed from 1 person to the other until call hang up. I need my money back.