1234, Main Street
Boston, MA 02123
01 April, 2005
<Recipient Address Goes Here>
<date or day of visit> <people who went shopping> came to <name> to look for a new vehicle. <I/We> <was/were> met by <salesman name>, who, over the next <time you spent> gave <me/us> one of the most unpleasant sales experiences of <my/our> <life/lives>.
This kind of behavior is inexcusable, and has certainly convinced <me/us> never to shop <name> for a car again. I thought you should know about the terrible treatment your customers are getting, so that something can be done before you lose all your business. Thank you.
encl: <List of enclosed items goes here>