very unhappy

Send my phone for repairs on the 11/12/15. I been phoning the repairs almost everyday but they keep telling me that the phone is not there. Eventually on the 23/12/15 they tell me the phone arrived there an the team leader say to me she will forward it as urgent. Today I contact the centre they telling me the phone is no longer under warranty after i was told its got a 1 year warranty,now all of a sudden the phone is under 6 month warranty and i must pay over R7000 to repair my phone. Mtn needs to take responsibility for this cause when i purchase the phone it was told to me that my phone got a 1 year warranty. <br> I'm so gatvol of Mtn is to get sick, they don't even have the decency to contact me once.