Vodacom Poor Service !

I have a contract with vodacom and recently took my insured phone in for repairs. I took the phone in at Vodacom 4U Vangate Mall three weeks ago and up to this day I havent recieved any job number or update as to where they took the phone so I can track it, all they say over the phone is that its takes three weeks to repair the phone. Its week four now without a phone and instead Vodacom keeps sending me their monthly bill. Im paying for a phone thats at the back of their stores gathering dust that time Im being highly inconvinienced.I have every mind to cancel this contract with vodacom. If i dont receive my repaired phone by the end of this week im taking my business elsewhere.