payment taken but services cut and treatened

Imagine i went to the vodacom branch opposite greenacres to make a payment of 600 cash and still ask the lady about cancellation, the say i cant cancel must phone a number. Now my account is suspended and getting mails like i didnt pay. please respond to this so i can send my id no... and you can locate the payment i made. This is utter nonsense has been disappointing from the start. imagine signing up for a data deal, just to see the same deal price cut in half months later but being forced to pay the same amount, so unfair. i will never take a contract from vodacom ever again. I paid cash and didnt bother to keep the receipt if my payment can be found it is ***** and the person who assisted me must be fired.