VODACOM IS TRYING **** ME

I AM VERY ANGRY WITH VODACOM, I FEEL LIKE A FOOL NOW. I CHANGED MY BANKING DETAILS AND PAID WITH THE OPTION TO PAY NOW FROM MY STATEMENT IN JULY. AUGUST WHEN I TRY TO DO THE SAME IT SAYS I HAVE TO PAY 279 AND I HAVE BEEN CALLING BUT THE IVR TRANSFERS ME TO NOWHERE. TODAY I FINALLY GOT SOMEONE WHO TOLD ME THAT IF MY DEBIT ORDER COMES BACK UNPAID I AM LIABLE FOR R188 EVEN THOUGH I HAD PAID THE INSTALLMENT WITH EFT OPTION. I AM CALLING AGAIN AND THE CONSULTANTS TRANSFERRED ME TO 4 DIFFERENT DEPARTMENTS . ****S!!!!!!!!!!!!!!!!!!!!!