Hitachi L22H01UB 22 in. TV

on the day this tv was delivered i straight away connected it up and got it going and was very pleased with the picture and i cotacted seller on the same day and said how pleased i was with it ,however in the next two or three days i found that when tv was on for an hour or so it started to freeze on a blue screen or the sound would go and when this happened the tv would not respond to remote , it had to be switched off at mains and powered up again. i got in touch with seller and tyey told me to have remote tested ,i did so and also had digital signal tested and both were ok, icontacted seller again and they said that i should take it to hitachi centre and have it repaired .i told them i was not satisfied and they said tyey did not do repairs and that as i had left positive feedback they were not going to do anything. so in future i will not be so hasty in leaving premature feedback 1688 rod