WORST SERVICE, CANT WAIT FOR MY CONTRACT TO EXPIRE

Sent my phone in for repairs three weeks ago, phoned on monday (10 August) to find out what is happening, as i am paying for a contract when i dont have the phone. Cell C says they will put me through to repairs.. i wait 20 mins and still not through, although i can hear the lady laughing and chatting in the background. I put the call down and then phone again, this time im put through to repairs. They tell me they cant fix my phone so they will send another one but i must pay. I ask them to debit my account (which they said they could). Phone back the next day and they say they are still waiting for payment and i must try again on friday (today)??? I phone today and they tell me they are fixing my phone??? Honestly i don know what they are doing. I am sitting without out a phone and keep having to borrow other peoples phones to call cell c. I definitely know that when my contract expires in November i am changing networks. Have to pay for this month (even though i dont have the phone im paying for and have to pay R450 for repairs which might or might not have been made).