Left a message in the afternoon on Tuesday and heard back later that evening. There were no appointments available Wednesday, but we set up an appointment up for Thursday afternoon from 2-5. Gabe called at 2:20 to let me know he could be at my place in 20 minutes.
When he got here, I showed him the problem and told him what I had already tried. He was very open to listening to what I had done to troubleshoot the problem already. I asked about the Yelp deal and he said he would definitely accept it and even told me to go purchase it while he worked on the problem. Once he was satisfied that he understood what was going on, he explained what the possible causes were and then I left him to his work.
He only took around 30 minute to get everything in working condition again.
I would definitely recommend Copperline to anyone needing a plumber!