Bad Service

I took up a contract sometime in May, and within 2 days the phone was faulty. I then took it to the store they told me if the problem persist I should bring it back within 7days with all the documentations. I did exactly that. the consultant told me that they will cancel the contract and re do it , he took the handset but the sim card was mine so I kept it. I never heard anything from them as promised so I was the one doing follow up and they could not get back to me. within 2 days I decided to go back to the store again to cancel the contract as I did not get any joy from them and they said I as a consumer was entitled and that I would not pay any cancellations fees as the problem was with them. I have been going from pillow to post and now they want me to pay for the early termination. Hello Peter kindly intervene. Unhappy Customer.