MTN ***** and poor service delivery

Well MTN has been attempting to debit large amounts of money from my bank account. I never had a MTN account. I was advised by my bank to go directly to myn. I went to the phoenix plaza they said they cant help ill have to go to coaslands branch because only they can helo. So I have to sign fractional leave at work go to the coastlands branch and they say they are offline but they can check the system for account. They check and tell me that the account is a ***** case and has been stopped. I ask for a copy or proof and the last says she cannot print anything with the system being off. I asked her almost 4x if i wasnt going to be debited and she said i wont. What's worse is the very same afternoon they attempted to debit me again for double the amount. How can MTN be offline? Service provider offline then what happens to your clients. And who is going to compensate me for running around, bank charges and credit rating drops?