Unhappy with telkom service

So this is what happened. Apparently telkom system mulfunctioned during June and July 2020.i dont know when did they become aware of that, so they decided to swnd me an sms to say june. And july month on 2019 we had problem with system we did not bill you we apologise for the inconvenience but we have to depit the total inclusive of january bills.

As a customer it wasnt my fault that their system did not work. They cannot do things in their terms, i have the right to have a say on payment arrangement, current they have cut off my mobole service due to their fault system. Customer is always right in most of cases and currently i also feel am right i this case. I have emailed telkom for payment arrangement on the june n july billing and reinstate the service they responded that they will never do that. I have been with telkom since 2014 and ive never been so disappointed they way i am today.