" Dear Mr Arch,
Just a brief note re your response to the problem with our cistern. The offer of free fitting of the replacement, even after 4+ years, was excellent and very fair. Your fitters arrived as expected and completed the job in a little over an hour, leaving very little mess to clean up.
Businesses often brag about their customer care, but fall far short of doing it well. This, I'm happy to report, is not the case with DBS, So many thanks for your first class reaction and we will be glad to recommend anyone who asks, to you. Please feel free to use this letter in any way that helps your business."
Yours sincerely,