VODACOM CANNOT COMMIT TO WHAT THEY SAY

I HAD A CONTRACT PHONE AND WHEN IT EXPIRED I PHONE TO CANCELLED THE PHONE AND THEY TOLD ME THAT I CAN CONTINUE WITH NO DEVICE FOR R43 FOR TWO YEARS FOR THE BENEFITS OF BBM, BIS ETC THAT I HAVE. DONE DEAL . FOLLOWING MONTH THEY BILL ME FULL AMOUNT PHONE IN THEY TOLD ME FROM LEFT TO RIGHT FROM BOTTOM TO UP THEY DID NOT CANCELLED THE CONTRACT. THEY WILL DO IT. THEN BILL ME AGAIN WRONG. PHONE AGAIN SAME STORY THEN THEY SAID MMPHO AND NTSOANE WILL FIX AND IT WILL BE R39.99 PER MONTH. THIS MONTH NOW THE PHONE IS ON DATA... I PHONE IN THEY DROP THE PHONE. IS THIS CUSTOMER SERVICE?