1234, Main Street
Boston, MA 02123
03/17/05
<Recipient Address Goes Here>
Hello.
<time you experienced bad service> <people receiving rude service> <description>. Unfortunately, we were treated very rudely by <employee(s)>.
<description>
This kind of behavior is inexcusable, and an unpleasant surprise from a company like <company name>. I would like <your suggestion>, but you do whatever you feel is necessary. Keep in mind, however, that your actions will demonstrate how much you value my continued business.
Thank you for your time.
Regards,
Robert Anderson
encl: <List of enclosed items goes here>