Pathetic MTN service

MTN has just decided to change contract terms in Jan 2023, for a contract that started Nov 2021 and was a 24 month contract. I have laid a complaint on which they just provided copy of contract noting I was not due to receive the normal data provision (50GB) but was due to receive 11.49GB. I had been on the same plan since 2016/2017, which doesnt make sense why change terms now, even worse before the end of contract. They claim the contract I am on qualifies me to get lesser, no explanation as to why over the years on upgrade I would agree on terms of 50GB being data provision, which was the same advise I got on my last upgrade at MTN Clearwater, assisted by Shaun. I am paying full amount via debit order, yet am getting way lesser than what was sold to me. Funnier part is what they claim are the so called terms of the current terms still dont match what I am getting. My complaint has laid on deaf years and service is pathetic as the agents also cant explain properly when I call them. From what I am seeing MTN might have realised they made a mistake and just decided to change the terms without any communication to me. the least that could be done is allow the contract to run its term and correctly provide data as this would be their mistake after all. I have also laid a complaint with ICASA which is also not getting much attention regardless of my effort to get feedback from them