****py service and warrenty problems

I bought a WI FI tablet for my kids in December two months later there was a problem with the screen, when I took it back to them I was told the the screen was broken on the inside and that is why I cant see it. Now I have to pay for the repairs of the screen, I accepted the quote more that a month ago.<br> When I phoned the they still wanted to know if I accept the quote. So in past 3 Months I had no feedback from them and I still do not have my tablet.<br> This is carrpiest service I have ever received and I will know from now on that their guarantee is useless.