“I just wanted to drop you a quick email to say how impressed we were with the engineer, who was sent to repair our Smeg cooker”.
“He was extremely polite, professional and knowledgeable. He would certainly be our first port of call if we were to experience another problem with our cooker. He justified our decision to contact you as an official Smeg repair contractor rather than looking for an independent company. We found him to be a credit to you and also the manufacturer Smeg.”