MSC voucher no payment by GLOCELL!!!!!!!!!!!

I GOT A MSC VOUCHER TO THE VALUE OF R8000.00 BOOKING MADE FOR NEXT YEAR JAN 2018. LAST PAYMENT WAS TO BE MADE ON THE 14TH NOV. TO DATE THE BALANCE OF R4500.00 IS NOT PAID. SENT SEVERALS EMAILS. SHEVAUGHN NANKERVIS REPIED SHE WILL GET BACK TO ME 7 DAYS LATER STILL NO RESPONSE I AM CURRENTLY DRAFTING COMPLAINT TO THE COMSUMER BOARD AND OMBUDSMAN FOR BREACH OF CONTRACT AND POOR PATHETIC CUSTOMER SERVICES. I AM AWAITING FOR FEEDBACK