To,
The Customer Relation Officer,
__________ (Name)
__________ (Address)
Date: __/__/____ (Date)
Subject: Complaint regarding service
Respected Sir/ Madam,
My name is __________ (name) and I am a resident of __________ (mention locality).
I write this letter in reference to the AC service that I have booked on __/__/____ (mention date). Respected, the AC was purchased by me on __/__/____ (date) and for which I booked a service appointment due to the __________ (mention issue – routine service/air conditioner not working/ air conditioner not cooling)
This is to inform that the service person/ technician who appeared for the service ___________ (was highly unprofessional/service not done properly/ any other – mention) which was not at all expected from a reputed company. This is to request you to kindly take appropriate action for the same. In case you have any queries, you may contact me at __________ (mention contact number).
Yours Truly,
________ (Signature),
________ (Name),
________ (Contact Number)
Incoming Search Terms:
- complaint regarding unprofessional behavior of technician
- AC service complaint letter sample template
lettersdadmin 
Rahul Sharma