REFUND NOT PAID - APPAULING SERVICE FROM BILLING DEPARTMENT

I cancelled my Telkom account in October 2017. I received bills for Oct,Nov, Dec, Jan, Feb, March and April 2018. I called Telkom weekly to try to resolve the issue and eventually had to log a dispute. I finally received a bill in May confirming that Telkom owed me almost R600 and that it would be paid into my account by the 6th June. This did not happen. I contacted Telkom on the 13th June asking when I would receive my refund and was asked to send in the front page of my bank statement and my ID. I contacted Telkom again yesterday and was now advised that they will not refund me until a log a dispute! What the hell Telkom? Why won't you simply refund me what you owe me? This is the most appauling service EVER!