Hisense unreliable and Incompitent staff

I bought a hisense H6 in September , within 3 months it was dead. The screen just went black , with no light or led. I sent it back to game for repairs and they send me a collection sms and they informed me that Hisense said they found no fault on my cell phone. Within 3 days the cell phone was dead again on the 5th December I sent it back to game again and informed that of the 1st incident that had happened. H sent an email to hisense about my cell phone that has been sent for repairs twice within 3 months , I told them that its either they give me a new cell phone or a voucher but they need to communicate with game because I have already sent it back. I am really ashamed of they as I thought I could trust their name. They have called me twice whilst at work which is also an inconvenience and I have requested both the times for them to send me an email just so I have something in writing and they have never done that. I don't have a cell phone yet I paid in full for one not even 3 months ago, its a festive season I can't even take picture of such a beautiful festive season. Hisense product and staff is pathetic I would not recommend Hisense to anyone