Cell C refuses to give me a new phone

Cell C... i am highly annoyed at your lack of customer service. I bought a Hauwei G7 April 8 2015 at the Uitenhage Shop Binnehof Store on contract. The phone started giving me problems in July same year and again in Dec. I took the phone again now in Jan and it lasted 2weeks and again gave problems. again 8 Feb i took the same phone in for repairs to date have not received a phone. I am sooo upset and annoyed with you right now that i cant even express myself. I have been sent from pillar to post and yesterday was told i could be given a store fone but i must wait. Why must i ****** wait???? And i dont want a store phone, I want a brand new phone - as I am still paying for it. i have been paying for this fone every month with no compensation nor reimbur*****t on my travel costs and telephone costs for checking the status.Ref number is: clc ***. I have been sent from pillar to post with cell c refusing to give me a new phone. They simply keep on sending the faulty one which refuses to charge further than 40%.