Upgrade without my knowledge and payments more than proposed

Good day

I have a few complaints to MTN:

1. I have been phoning nonstop regarding my new upgrade that a manager can contact me, nobody has tried to contact me regarding this issue, is shows me clearly what you think of me as a customer, but shows me what after service I am receiving from MTN. 2. I spoke to a lady Oreabetse Ramorola on the 10th of April 2024 where she was escalating this issue for me up to date I never received anything back from MTN. 3. I was over charge this month – R308.12 where I was supposed to be only R199.00 for 50 gigs and instead I only received 20gigs night and 20 gigs day which is unacceptable nobody told me it will be more, 4. The person that contacted me promised me that I will receive 50 gigs for R199.00 which clearly never happened I have requested a quotation which also did not happen and my upgrade was done without me signing anything. I would rather go to a different service provider that is willing to contact me and assist me than a service provider that never gets back to me. Please can someone URGENTLY get back to me as I do not want any upgrade anymore.