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

[NAME & ADDRESS, ex.
Link Building
1234 First Street
Suite 567
Anycity, Anystate  85245]

Dear [NAME, ex. Link Building],

It has come to my attention that [NATURE OF PROBLEM, ex. our Magnaflux compressor has malfunctioned at your premises].  I would like you to know that I will personally take care of this matter for you.

[STATE WHAT YOU WILL DO, ex. I will immediately arrange for our trucks to pick up the compressor at your convenience and install a replacement.]  [MAKE ASSURANCE, ex. I personally assure you that you will have an installed and properly functioning Magnaflux compressor by the end of this week.]

Since your satisfaction is my obligation, I want you to call me at XXX-XXXX if there is anything else I can do for you.  Indeed, I want you to keep us in mind for all your future [NEED, ex. industrial compressor needs].

Sincerely,

[YOUR NAME, ex. Jill Jones]