Paying for a phone I can't use

HONESTLY HAD ENOUGH OF THE **** SERVICS I AM RECEIVING FROM RUSSELL'S AND VODACOM. I was sold a phone that is faulty and it had gone for repairs when it wasn't even three months old. I was told if it is faulty again after the repairs that it would be replaced. I am now sitting with a phone that just about comes on and i have been up and down since November and still have not been assisted, Endless threats ive made regarding not paying my account have fallen on deaf ears. I was tokd to pay for a loan phone and i even took my phone to gateway on my own and they refused to help me. I really have had enough this is the most pathetic retail shop ever yet i have been a customer foe years. My phone now switches off on its own eveb when it just got charged. It freezes. Senda msgs on its own. Unlocks itself wtc and i must pay for a phone like this that isnt eveb a year old. Time to get lawyers involved!!!