“extremely knowledgeable about the problem and got it sorted very quickly”

Just wanted to say how impressed we were with your company and the guy (sorry we didn’t get his name!) who came to our property to sort out our blocked drain. He was extremely knowledgeable about the problem and got it sorted very quickly. He explained exactly what he had done and left us confident that we wouldn’t have any more trouble.
I also rang DASA, who sub-contracted the work to you, and told them how impressed we were.