I contacted Gentleman Plumbers re: imminent sewer back up. Appt scheduled in timely manner. Steve arrived first day, was very polite and thorough, making a couple minor repairs. Diagnosis of problem took most of the day (despite records revealing past occurrence of roots in pipe) Auger stuck in pipe at end of day required another crew the next day to remove. Also determined (after the auger was stuck and payment made!) that the blockage was in the city portion of the pipe however the city crew could not clear it until the auger was removed (and we were able to be home) This meant 3 1/2 days until pipe actually clear which was quite frustrating especially since we had already paid $850.00 for a job that actually should have been done by the city!)Dan and his crew were very polite and helpful when they came to remove the auger, clearing as much of the problem as they could. Next time I will call the city first.