QUERY ON UNATHORISED DEBIT ORDER FROM CREDIT CARD

ON 3 FEBRUARY 2015, I RECEIVED AN SMS ALERT NOTIFYING ME THAT MY ACCOUNT WAS DEBITED FOR AN AMOUNT OF R1022. I WENT INTO THE BANK ON 4TH FEBRUARY TO QUERY THIS UNAUTHORISED DEBIT. AFTER A QUERY CALL TO THE CALL CENTER, I WAS MERELY TOLD THAT I SHOULD GOOGLE WHO THE MERCHANT WAS AND DO A QUERY WITH THEM. I LEFT THE BANK WITH NO ANSWERS. AFTER GOOGLING THE MERCHANT (BUSHEY HEALTH) I FOUND OUT THAT I WAS PROBALLY ****MED SINCE THERE IS NO CONTACT DETAILS AVAILABLE FOR THIS MERCHANT. FROM READING OTHER COMPLAINTS ONLINE REGARDING THE SAME MERCHANT WITH SIMILAR UNAUTHORISED DEBITS, I LEARNT THAT I SHOULD CONTACT THE ***** DEPARTMENT FOR ABSA TO BLOCK MY CREDIT CARD TO PREVENT A SIMILAR TRANSACTION. I WISH THE STAFF AT ABSA WERE MORE AWARE OF SUCH **** TO ADVISE CLIENTS OF FURTHER ACTION WHILST AT THEIR SIDE. i HAVE EMAILED THE ***** DEPARTMENT BUT PLEASE CAN SOME ONE URGENTLY ADVISE ME ON FURTHER ACTION TO RETRIEVE MY MONEY AND TO PREVENT SUCH **** IN FUTURE SINCE I HAVE NOT AUTHORISED SUCH PAYMENT.