Complaint Letter
I recently contacted your office in order to {Request}. I was assured that someone would contact me in a few days to update me on the status of the situation. After two weeks had passed without any reply, I tried again and received the same result; no return call or letter. This has put our relationship on very tenuous ground after {Number of years} years of conducting business with each other.
Please reply as soon as you receive this letter. I know you do not condone poor business practices, and I’m sure this situation can be easily corrected. Thank you for your personal attention to this matter.
Sincerely,