HP India — hp laptop 15-au623tx not working

Address:

632014

Hp laptop
Model no-15-au623tx invoice no-sti-s/-00312
Batch-5cd64602nw
Problem - blank screen with caps lock blinking 3 times regularily
I already filed a complaint regarding this.. Hp service center alse sent their guy to check on 13th july, 2017 ; he said that ram needs to be replaced.. Since then whenever i call this guy either he doesn't pick up or if he does he says that havn't recieved part from company end.. Now today is 24th july and they are ignoring my calls.. Did not expect this recklessness from hp's end.
Previous complaint no-[protected]