MTN Glitch in billing

Disgusting service. My son's phone has been suspended since Thursday. Not one person from MTN can explain why. They keep saying I must pay ****** amount. I keep asking why if my debit order was successful and tehe new amount will only go of on the 31st . They just keep saying it is suspended. The call centre can't assist. Agents are useless. I have spent hours and hours to try sort it out. Went to the Mall of the South MTN today for the first time in five months!!! Queued forever. Was promised they would call me with answers. NO ONE CALLED!!! Heard from a friend there is a glitch in the system. I hope we will be reimbursed for the aggravation and no service!!!