Hero Motocorp — Misbehave, extra charge but not mentioned in bill

Today I went to shri automobile near rampur tiraha muzaffarnagar up to check up my new bike (splendor plus bs6 2023)
There in the agency they checked out my bike and exchange my bike's engine parts that was not working properly for that they charged 200 rupees.
When I asked to them that my bike's guarantee is still remains for 4 years and 6 month so there is no charge should be for these parts
For the evidence purpose i started to shoot a minor video there's some of the employees gather at a place and they started shouting on me because of that they mentally harrasment me and misbehave with me.
They mentioned 10 rupyees in the bill and take 200 to me.
Please make an action