Hero Motocorp — vehicle body damaged by at service station during regular service

I am vijay a. Bhatt gj27-s-9132 was my vehicle no. Maestro model
I use to do service in hero show room always.in the same way dt[protected]
I left my vehicle for service. During giving for service i know the condition of vehicle and it was no damage on parts.
At the time of taking delivery after service & some job done on wheel bearing & bush related
I found that left side of body part was broken and its vibrating
When i was complain service incharge about he was not ready to listen about it..& misbehaving for the same with me with words "do whatever you can we are not taking any responsibility about this nonsense"
Then after. Me complain on toll free number with complain no :[protected] & me got text from service agency for visit to resolve it
When i reach there incharge reply "its just formality to text in response to your complain nothing to do"
No one ready to take damage responsibility & play blame game, is it fair?
Presentation & responsibility of the staff shock me...
Please resolves my complain asap