Bro4U — After servicing did not provide invoice.

I have given service for my royal enfield and spent 7500 rs for servicing. It’s day one today i drove my vehicle and the very bad sound coming from back and huge sound from breaks. Feels like i got cheated and they didn’t even touch my bike for servicing.
I called many times bro4u but no response..
Please look into this
Swapan
[protected]