Bad treatment of a Pensioner by MTN SA

I am not impressed with MTN South Africa, mostly after my father who is a pensioner was tortured by MTN South Africa. In year 2020 when Covid Pandemic started, my dad's account was debited twice by MTN, and MTN acknowledged the error and the money was reversed. After few months my dad experienced the same thing, what was resolved was that my dad pays MTN on EFT at the bank, which he did. But still MTN still debited monies my dad never owed. My dad's contract came to an end late last year (2021), MTN SA in January 2022 decided to still debit my dad's account and decided to block my dad's phone number.

We have consulted MTN SA several times and it is very clear that we don't matter to them even though we do not owe them. I am afraid of the treatment we have received from MTN SA. My dad had to now get a new number with another service provider. If we want to make South Africa better, we must all work together.