Makro Credit not refunded after returning item

MAKRO HAS SUCH BAD CUSTOMER SERVICE. THEY ARE HORRIBLE. I RETURNED A DRIBUDDI 5 MONTHS AGO BUT THEY STILL HAVE NOT REFUNDED ME. ALL THEY DO IS CHARGE ME INSTALLMENTS FOR A PRODUCT WHICH I RETURNED. THIS IS THE WORST CUSTOMER SERVICE . I HAVE SENT THEM COUNTLESS EMAILS AND CALLED THE CALL CENTRE MULTIPLE TIMES WITH ZERO HELP. WHY SHOULD THESE COMPANIES TREAT CUSTOMERS LIKE THIS . 5 MONTHS?? COME ONE !!!!