Symphony Limited — symphony air cooler diet 50i not working

Address:

Gautam Buddh Nagar, Uttar Pradesh, 201301

Bought symphony air cooler diet 50 i
In three years the motor n blower got rusted
Athorised service centre tech visited n could not replace the motor tried even hitting with the hammer spent almost one hour but could not change the parts
Given to understand by the tech that diet model has not been successful i have spent almost rs 9500/ very disappointed
Kindly look into the matter n get it repaired by sending some experienced n trained tech to do the needful
Spare parts like motor n blower rates of cooler are exorbitant as compared to ac parts