Voltas Beko — Refrigerator double door

Address:

Mathura

I have voltas beko double door refrigerator which stopped working a month ago, i have registered complaints and 4 different technician came and gave the same answer that pcb is not working, they told to replace it within a week but till today i havent got solution.
I have also complaint to area manager but he is also giving false hopes . Got really fed up by service of voltas . Now dont know what to do to get solution