Invoiced amount to much

ABSOLUTELY PATHETIC SERVICE FROM VODACOM.<br> MY INVOICE AMOUNT IS MORE THAN I ALWAYS PAY. NO ONE CAN TELL ME WHY, I DON'T GET AN INVOICE SENT TO ME ON MY EMAIL EVERY MONTH TO TELL ME WHAT MY INVOICE AMOUNT WILL BE. WHEN I CALL VODACOM I GET TRANSFERRED FROM ONE PERSON TO ANOTHER STILL NOT HAVING ANY PROBLEMS RESOLVED AND THEN BEING TRANSFERED AGAIN WITH A COMPLETE CALL TIME OF 1 HOUR 15 MIN AND 48 SECONDS (PICTURE BELOW AS EVIDENCE) AND STILL NO OUTCOME OR ANYONE PICKING UP AGAIN! BIGGEST MISTAKE I MADE WAS TAKING OUT A CONTRACT WITH VODACOM.