Still waiting for my credit after my cancellation

I went into the Dstv branch in Gift Acres on the 10th of July to cancel my subscription. The person who assisted me took down my banking details and assured me that my credit will be paid into my account in 7 days. After this still didn't happen after almost a month I phones through to the call center. They said the credit was not processed and that they will then process it. Almost 2 months later I am still waiting for my credit. I am considering selling my decoder and never reconnecting my dstv ever again. This service is pathetic.