I had to throw in the towel on an island kitchen the other day. It was one of those older triple sinks with the disposal in the middle. Cabinet doors were half height, and each side basin was individually trapped into a sanitary cross with a loop vent. Of course, there's no cleanout, and no room to add one without gutting it. I try every trick I know off to get my cable down that cross, to no avail. I even cut the vent loop to the dismay of the customer. No dice.
The guy was dogging me from 20 min into the call. Said the other 4 companies that had been out over the years had been in and out in 30 mins and he couldn't believe I couldn't do the most basic plumbing task. I finally told him sorry for the inconvenience and that we wouldn't charge him anything per my managers instructions. He says he's going to call a lawyer and I tell him we have nothing else to talk about.