passing the buck in cancelling contract

<p>vodacom rewards calls me and offers me a router cause i've been a loyal customer, only to discover after a few months that this was actually a contract. i call them to investigate and cancel it, they do and realise they were at fault - promise to cancel within 21 days. it's been 3 months, debit order still going through (they had my details from prior telephone contracts). now, nobody who promises to call me back actually does, i'm the one following up, and now being told i was not offered the contract by vodacom, but mondeor mobile. so is vodacom giving our numbers to other companies? suddenly when i need something done i'm not a vodacom client anymore? what about my bank charges? airtime? - cause they are not vodacom? so sick of this!!</p>