DEBIT ORDER WITHOUT CONSENT

A debit order of R129.99 goes off on an Inactive bank account of mine every month for EC Finance. No contracts were signed, no permission given for debit orders, no loans / business were ever done with the company EC Finance. With the bank account being Inactive, the debit order gets rejected due to no funds available, which the bank charges me R150 per transaction. I have tried contacting EC Finance regarding this issue as to why they are debiting me for no services rendered, along with the issue of who is going to refund me for every time they debit that account that is accumulating bank charges now. I have had NO response from EC Finance.

How do I go about resolving this issue because I AM NOT HAPPY!!!!!!!!!!