Refund refusal

I booked via booking.com and the chose bkg hotel for me. 5 minutes after I had paid for the booking, BKG hotel called me to say we should cancel as we are the 3rd booking for the same apartment. I did cancel and had to go back to the bank for refund. I was refunded but unfortunately the bank took their money back as BKG hotel refused to approve the reversal. My account is on a minus of R4950