Double debit order... my issue???

My Husband missed a debit order, of R1.5k and phoned them the same day to resolve this issue. Mtn agreed that a new debit order of R3k would go off the next day to make up for the debit order that bounced, which was fine.

The next day a double debit order of 6k went off.We then phoned MTN he next day to try and resolve this, they informed us that it would be reolved asap. We got a message 3 days later saying that the case has been closed but it still wasn't resolved.

We then phoned, everything changed, we now apparently needed banking statements, and this was our issue to resolve now. When we asked to speak to a manager he was going to phone us back in 10min but we never got a call.

We then phoned MTN again to speak to a supervisor and an employee by the name of "Tfima' with a serious bad attitude told us we can't speak to a manager and that he won't put us through. My husband then asked so are you declining me to speak to a supervisor and his response was "Yes"

We have been loyal customers for years! But will definitely be changing to a new network provider. The attitude of the employees are shocking and really needs to be dealt with.