Account passed over but is current

In June I purchased a cell phone for my son. I signed the contract. Confirmed my banking details as I have two other phones with Cell C. The debit order never went through. By November I was paying EFT, which this payment was never accounted for. In December my contract was suspended. I made contact with the call centre. Paid the outstanding amount and the cell phone was reactivated. My account has, however, been handed over. The debit order has been going through since January. I cannot get hold of anyone in the legal department, I held for 41 minutes without any response. No one will help me and I am so exasperated.