If you would like to compliment the customer service provided by an employee, here is a sample template you can use to write a letter acknowledging excellent customer service.
To [Recipient name]
Dear, [Recipient name]
This letter is to acknowledge the excellent customer service provided by [Employee name] who helped me resolve my problem within a few minutes. Their services have always been prompt and professional.
[Employee name]’s commitment and enthusiasm towards providing the best service is commendable and I have never had a bad experience with him/her as he/she has always assisted me while getting to the root of the issue. This consistent pleasant experience has exceeded my expectations and it is my pleasure to interact with [Company name].
Thanking you again for your hard work and dedication. Keep up the good work.