[DATE, ex. Monday, March 31, 2008]

[NAME, COMPANY AND ADDRESS, ex.
Link Building
XYZ Temp Agency Inc.
1234 First Street
Suite 567
Anycity, Anystate  85245]

Dear [NAME, ex. Link Building],

I regret that we have had a less than satisfactory experience with [NAME, ex. Alicia Johnson], whom you sent to us as a temporary [POSITION, ex. secretary] on [DATE, ex. June 10].  [STATE NATURE OF DISSATISFACTION, ex. Her curt nature of dealing with customers on the phone resulted in three separate complaints made to me by displeased callers.]  {Unfortunately, I was forced to let her go [TIME, ex. after the first day]}.

Since I know your firm to have reputation of providing decent services, I am confident my experience is merely an uncommon aberration.  Nonetheless, I trust this information to be useful to you.

Sincerely,

[YOUR NAME, ex. Jill Jones]