I called Patterson plumbing and heating for help with a kitchen sink backup. I called after 9:00 PM expecting to speak to an answering machine. To my surprise, a real person answered and scheduled me for an appointment the following day. She was very polite and a received two separate follow up calls. On the day of the repair, Jon and Mark came a few minutes early up for our appointment. They were courteous and professional from the moment they walked in. The drain they came to repair turned out to be a real challenge and Jon had to try several methods but was determined to find a solution. I was impressed with his knowledge and determination. In the end, he solved the problem and they both did an outstanding job cleaning up. I will highly recommend Patterson Plumbing and especially Jon and Mark every opportunity I get.