cancellation

phone to cancel the cellphone that i had with vodacom. ask what the fully and final amount will be to cancell the contract was provide a earlycancellation settlement and i ask will this be the fully and final amount been and that i will receive not further invoice from vodacom i was told the final will be the early cancellation which i pay. the account has been hand over to the debt collection, which vodacom did not even sent me message regarding this cancellation and i have advise that the number *** sim is not in a phone and not working. not very happy with vodacom and best part i ask for the manager to come back to me