Chevrolet Spark — Power window not working after service

Address: 500016

Website: orangeauto.in/index.html

I have given chevrolet spark to service center orange chevrolet service center, Sanath Nagar Hyderabad. There was no problem in the power window and service executive checked this. When I received the car after service it was not working at all. When I asked them about this they said they are not responsible for this (although I am sure it went out of order after they washed it) and I need to bear the cost. They just gave me autocop (power window company) and told me to get it repaired from them and bear the cost. It's very frustrating to get out of order car after service. I want all the expenses related to the power window to be bear by chevrolet service center, SanathNagar .