Violated consumer rights

I am frustrated customer of mtn I called the call center regarding my account BA***. I am being charged amounts that I did not agree to and I am in aplan that I cannot afford to pay. I have contacted the call center countless time since May 2026 I have received no help instead the bill keeps increasing. When I ask about my bill im told I wa migrated to another plan without my consent I am charged every month for migration that I dis not agree to.i agreed to pay R179 for 25gigs of data a specific that was running in Marh/April 2026 for some only deal.now i am charged R261.09 which i did not agree to and I cannot afford. My cell phone was R615 per month I agreed to that amount now I am charged R643.99. I cannot afford to pay the bills I am unfairly treated and not heard as a customer.