[Resolved]  Electrolux Freeze (Double Door) — Cooling in the lower door

I have purchased the freeze, a year before. Before last month it has left cooling in the lower door. Cooling of the Upper Door is ok. last one month I have repaird the same by the Hi Tech Service Ph. 31914040 vide complaint No.7p[protected] and they have change Timer and Biometal and charged Rs 1500/-. And after the week time. the same problem Start. and after server reminders and their technician visit and my last complaint no. 7p[protected] the same problem is there as the problem is not solved. When I am complainin them they are asking me for the fresh complain each time even after the same is not solved.
Kindly arrange to solve my problem at the earliest.