Utter *******

So I had 2 mobile contracts with MTN which came to an end in August 2021. At the time I received a call from one of their agents offering me a Zero rated package meaning, it would still kind of be a contract but I would have no monthly fees and I can upgrade whenever I like. I agreed to it because at the time I didn't want to upgrade but thought I would change my mind over time. Months went by and I still received a monthly invoice, no usage fees on it but a fee for Content events, bare in mind this fee was not the same every month. I called, emailed, went in store and no one could tell me what this fee is for. I just kept paying it because MTN threatened to disconnect my lines. Eventually I got fed up and asked to change to Prepaid. This day, it was a back and forth as usual with MTN, the agent said she would change both my lines to prepaid, all she said was that she submitted my request to change to prepaid. No information was given, no time frames, nothing. Next thing I know, my phone does not have service, airtime and data bundles disappeared. And just that morning J purchased a data bundle of R300. As soon as I had service again, I was back on the phone with MTN, being passed from pillar to post. People are telling me I need to speak to the retention team but I kept being hung up on. I then decided to email my complaint through. They advised that when changing from contract to Prepaid, you would lose your existing bundles. And I was like but no one told me that, if I had known that, I would've used my bundles finish first before asking to change to Prepaid. Nobody has R300 lying around like that no more. I got no help from them and I am still waiting for their retention team to get back to me. I need help please. I just asked MTN to reimburse the R300 of the bundle I purchased and the monthly fees I kept paying for who knows what!!!