Poor customer service

My name is Michael. I upgraded my MRP mobile contract in 2020. In December I was not given my 1gig data as contract benefit i called several times without any help. In December debit went on the wrong date and it was not in favour with my budget.

As a result double debit of R378.00 was arranged for January 2021 but now to my surprise R378.00 and R189.00 was debited from bank account on 29 January 2021, can anyone explain this to me?

As error of debiting December 2020 on the wrong date am I now being punished by line suspension and not be able to use my January 2021 benefits? What happened to my 1gig data benefit for December 2020.

I called several times but instead of being helped the problems now becomes me why? Must I go to the bank and block future debits from MRP MOBILE and get blacklisted as a results?

Why did MRP MOBILE agree to upgrade my contract knowing exactly that they will treat me bad after two years of good service to me?