Cell c contract issues

I have a data contract with cell c that is a month to month contract. Starting from last month they stopped debiting on my bank account. I therefore paid manually. When I called their customer care centre they told me that they had issues with debit orders. However during that process they deactivated my line yet I had paid them. They restored or activated the line again after 9 days. They have again disconnected the line and yet my account is up to date. And I have already paid next month's debit order. Can you please assist or cell c should just pay me back my money and continue disconnecting their line.