Disappointed in Hisense

I'm very disappointed in Hisense. I'm using a Hisense infinity H40 Rock. First of all the they said the screen won't break. Now I've got a green ink mark on the screen. No one can fix my phone I have to send it in to Hisense self to be fixed. No other shop can fix it. And sending it to Hisense is so expensive. Its giving me endless problems with deleting numbers and the list goes on and on. I'm so disappointed.