HAPPY TO CHARGE SERVICE FEES BUT OFFER NO SERVICE

I have sent FNB a debit card dispute form on 14 Aug 2023 as DSTV had without my consent debited my account with an amount of R1 048.00, withinminutesI received an automatic response with a reference number that they had received the dispute and would attend to it within 5 business days. After 3 attempts and 17 working days to followup on this matter I have had no success or contact from my bank of 15 years and also no reversal or refund of my money. To place a cherry on the cake, DSTV has again debited my account. What is one to do when your own bank allows constant unauthorized debits from your account and does not perform their function of safeguarding your account?