Bad customer service on account billing the last 3 months.

MTN Service Provider office Bloemfontein is the worst service i have received in a long time . You have to wait about an hour for service and there attitude is if you want to be helped you will wait . 10 customer service counters only 2 consultants on duty . After waiting an hour I asked to see the manager on duty , The manager named Mark sit in his office but tell the lady to say he is out off his office but I can see him sitting in his office . Do he think we are stupid . My query is that when MTN moved to a new system my profile was duplicated and since then my debit order was taken double for the last 3 month. i contacted MTN and gave instructions to cancel my debit order and payed my account cash for the last 2 months. Friday my account was suspended because of non payment . Pathetic people with a don't care attitude at this branch .