Back in 2011-12, we were renting a townhouse, and our landlord had a service contract with Service Network, twice a year for furnace & AC checks, and one other time for the water heater. They were always professional, friendly, and clean. We now own our own place, and Thanksgiving Day 2016, we had a sewer backup in our basement. Service Network were the only one of eight plumbers we called to return our message! At no additional holiday charge, Pete came out. Nice and professional, but without a camera, his cable couldn't find a way through our complex connections to the pipe to the alley. Pete and his boss then referred us to a camera crew from another company, who were able to solve our problem, the next day. We give Pete stars for a persistent effort and good attitude, even with his frustration. And they return calls on a holiday.