NOKIA HANDSET 5310
Display problem

I bought the phone last year and within 2 months the display was destorted with black lines on the screen. i got the screen changed by paying Rs 1850. after some time again problem was there i again paid 1700 Rs I am fed up with the phone and till now i have spent more than Rs 3500 on a phone costing Rs 8150 and still my phone is not in working condition as there is no display on the screen