Terrible Service delivery

I purchased a cellphone contract at Telkom Mobile on 9th of November 2015. The device included in the contract was a Samsung A5 which started to have some charging issues few weeks from date of purchase, I went to one of the nearest outlets to have it checked and it was booked in for repairs, the handset was taken for a long time and was eventually returned back to me. It worked for less than a week and the battery started to swell the screen dimmed up and eventually blacked out, I returned again and now I'm being told the phone I purchased less than six months ago is out of warranty and that I have to pay R1,255.00 for the repairs. Rediculous!! I tried calling the customer care line to have he matter escalated and I'm not having any joy. No one seems to return my calls let alone explain to me how my supposedly \24 months warranty\" I was told about upon purchase of this contract is not covering the factory faults of this device. Im paying my account without fail evidently for a phone I don't even have! I want this fixed immediately or cancel this catastrophic contract! To top it all the call centre consultants are terrible to say the least! Telkom delivers a shocking service!!"