__________(Name of the Company),
__________(Address of the Company)
Date: __/__/____ (Date)
__________(Name of the Customer),
__________(Address of the Customer)
Subject: Complaint against unprofessional behavior by _____________
This is regarding the above mentioned subject that Mr/Mrs __________(Name), working at __________(Department/Staff) of __________(Company Name) is not behaving professionally. He/She misbehaved with me and my colleagues(If Applicable) on __________(Date). We simply asked for his/her help and he/she refused to do his job.
I believe that this issue needs to be addressed to create a better and more professional environment within the company.
Kindly, look into this matter and take corrective action.