Bad customer service

I took a data contract on the 15th of August 2020 80Gig (50 day, 30 night) and I was told my installments will include pro-rata which I agreed to. Month end there was no deduction, I then called the store and I spoke to Themba, he then said they will decuct in September as I took the contract in the middle of the month and it still didn't happen, I complained through Facebook because and I was given run arounds about my query. (ticket number SR#*** and SR#***-KM) This resulted in me having to buy additional data just so I can submit my school assignments. I was advised to visit the branch where I initially took the contract from even after mentioning that I am home for maternity leave and there is no Mtn store near me. I had to travel from Free State to Heidelberg 150km with stitches as I gave birth the previous month and I was still not assisted. I was told that my number has been migrated from the old system to the new system (THIS IS NOT MY PROBLEM) hence my billing was incorrect. I requested for the contract that I signed for as I felt cheated on with the irregularities and inconsistency of this situation,I was also told that the BM (Branch Manager) or Admin will send me my contract via email and my query has been escalated to the RM and feedback will be provided, even now I am still waiting and this is frustrating as I believe this will have negative impact on my credit score for mistakes that I am not responsible for. I was given the following references and I was still told that "They are still busy with my query" SR#1-*** SR-*** and SR-*** respectively.

Now I'm getting an invoice that says I owe MTN R10 000?? For what? I've been paying for services that I'm not receiving, I pay my installments every month (the ones I signed up for) yet I still don't have data and it's not fair that I'm paying for services that I'm not receiving And I refuse to make an arrangement as this is not my fault. Me making an arrangement means I'm admitting to the amount that you say I owe I can't account for your mistakes. FIX IT and please cancel my contract as it is not beneficial for me.

I run a business online and it requires me to always have data daily 24/7, every month around the 9th my phone gets blocked as well as my data, I keep losing customers because of MTN and its getting on my nerves now. On the 12th when I checked my data it was 19.75 Gig right now when I check it its 13. 92 How is it possible that in 5 days I have spent over 5gig??? This is so unprofessional, You are messing up with my credit score and the risk of having to close down my business as I will not have customers in the near future

Is this how you #ReMake2020? Is this how you treat your customers fairly? I regret walking in to the store upgrading my contract with MTN... I'm disappointed and disgusted by your level of professionalism.