Company Failing to refund balance

Struggling to get a refund from DSTV. Last month in May I called in to schedule a cancellation for the end of June 2021 and the agent went to go cancel my services with immediate affect without my consent. After speaking to another agent to reactivate my services I was charged almost R300 due to the previous agent mistake. I then chose to chancel my services with immediate effect on the day at the time due to poor service. My services was cancelled end of May and I dont have any dstv services active but yet still waiting on my refund that I paid for a full DSTV family subscription. Sent through all relevant documents already but yet the company is still failing to refund the money I have sent them. proof of payment, ID, bank statements all sent