Poor and harsh service.

My account has been incorrectly billed for the month of September.

There is an amount of R1537 that was supposed to have been subtracted. I have asking for it to be corrected and no one seem to be concerned about correcting it. As I indicated last week that I am only aware of April outstanding payment. It is now becoming frustrating as they gave me 10 days to correct my account or they will hand my account to credit bureau. I find it unfair and brutal that they can ignore my efforts to clear my account fairly. Where do I send MTN to when they want to ruin my creditworthiness without getting their facts straight? One consultant that I once spoke with did mention that such an amount (R1537) was supposed to have been subtracted but instead it was add into my account.