Service Not good after sale

Location/place: Noida

Name of company/service: Microtek invertor

I D.N Prasad
Purchaged a microtek invertor no 1 brand of india SoNo 103BGBNB 614510 . my waranty is expired, some problem in invertor I registerd a complain No 4560 date 27.11.12,customer care executive given the time within 24 hrs solve your problem but today is 72 hrs attend my complaint after 20 give telephone call . microtek invertor a cheater compny regarding service.