Capital Honda India — Regarding estimation charges for insurance

Address:

Capital honda, Meenambakkam

My honda city was left for service and insurance clam at the capital honda Meenambakkam service center, when I asked for the estimation slip to be provided to the insurance company there was no intimation of any estimation charges. When I got the estimation email which also states that an estimation charge will be added if not claimed and why was I not notified when I asked for the estimation upfront. Is this how the protocol works ?
A customer needs to be intimated before the estimation is made if there are any additional charges are to be made.