POOR SERVICE NON CANCELLATION OF CONTRACT

A MONTH AGO I REQUESTED VODACOM TO CANCEL MY ONE CONTRACT AS I TOOK OUT A NEW CONTRACT.MY OLD CONTRACT EXPIRED A FEW MONTHS AGO ON CELL NO ***.ON 1 JULY I REALISED THAT MY OLD CONTRACT IS STILL ACTIVATED AND I WENT TO VODASHOP WESTGATE FOR HELP BUT AFTER WAITING FOR 30 MIN I COULD NOT WAIT ANY LONGER AND LEFT DISGUSTED.COULD VODACOM PLEASE COME BACK TO ME AND EXPLAIN WHY MY CONTRACT ON *** IS NOT CANCELLED AND CANCEL IMMEDIATLY AS I CANNOT AFFORD ANOTHER MONTH PAYING FOR TWO CONTRACTS.THANK YOU