Hotel Cube reservations cancellation

I booked on the 24th and on the 25th they debited my account R4,743.49 and I cancelled my bookings same day but they claimed they didn't receive the amount because it was pending.Bookings.com sent me a cancellation letter but Hotel Cube isn't issuing one since I've been calling them . the manager is forever not available according to the receptionist .On the 31 October they still debited my account R 4743.49 I tried contacting head office regarding this issue but no help , my account is over withdrawn because of them. I've spent too much money trying to resolve this issue but no help they requested a bank statement and I forwarded a transaction history since statement end date is 23-23 Fnb confirmed that they already banked the amount but keep on debiting my account causing unnecessary bank charges.