Hero Motocorp — Against my first free servicing of my hero hf deluxe bike.

Address:

Patna, Bihar, 800001

I rajesh kumar, had purchased hero hf deluxe bike from patliputra automobiles on date 18/06/2016.And when i went to patliputra automobiles's workshop for my first free servicing the workshop employ demanded rs. 400 against first free servicing.I want to know about the free servicing provided by the company and what is the meaning of free servicing please clarify me as soon as possible.