Sony India — Ref to rebooting of sony bravia lcd

Address:

Dharwad, Karnataka, 580007

After my warranty period expiry of the lcd tv has started to reboot. The same was serviced with their auth service centre . But the problem started to reoccur within one week The service centre told that the part to be changed costs 6000. Now I want to complain through you that the sony service centres are not competent enough to solve consumers problem or they r taking advantage of the ignorance of our indian people . Please advice what steps to be taken to solve my rebooting problem of sony bravia