Faulty Hisense Phone

I bought a Hisense U989 phone from Game wonderpark on 14 March 2017 for R1912. the phone has been giving me problems ever since. It freezes in between calls, i cant use the internet as it freezes and the screen turns black and then white and then it restarts itself. For a phone that is not even a year old doesn't sound right. i haven't downloaded any apps Expect for Whatsapp. I took it to Game Wonderpark on the 13th October. i was told the phoned will booked for service and taken to Hisense and this will take 21 working days. I waited and was without a phone. i was informed on the 25th October t hat the phone is ready for collection and i went the same day to fetch it. The report from Hisense said that they 'Updated the Software". When i got home, the phone gave me the same problems. I took it back the following day on the 26th October but i called and spoke to the store manager first before going to the store to explain my challenge. They requested that the phone should be taken again to Hisense and i requested a Loan phone since i couldnt afford to be without a phone anymore and they gave me one. on the 31st October they informed me that the phone is ready for collection at the store.i went the same day to fetch the phone and return their loan phone. The report from Hisense said they Upgraded the software AGAIN. i went home and guess what, SAME PROBLEM... i am really tired of going back to this store with the same problem that cant be fixed. its a waste of my time, effort and petrol. i have been patient, understanding and its enough now.. I want my money back. The phone is no use to me as it is faulty and i am tired of going up and down and explaining one story to 100 people. I will purchase a phone elsewhere..