Agarwal Packers & Movers — Loss & Damage of goods (household items)

I was suggested to use Agarwal packers and movers to transport my household items. I took their service for the pakcing, loading, transportation, unloading and upacking. They come packed and shifted to my destination. However during the delivery i have noted that there are 3 items missing and one of it is my new mattress. When enquired there is no proper response, no guidance and the customer care gets dropped after 5-7 minutes. This is absolutely unacceptable behaviour and there has been no courtsey to the customer's grievance and calls.