I have a leak in my ceiling and a plummer came in and they cut a hole in the ceiling where the leak was happening. They said it wasn't a plummer's problem, but when I run the dryer the pipe leaks. the pipe sits right on a beam and It's wrapped with foil looking tape and it leakes whenever we run the dryer. The air conditioner guys said it wasn't an air conditioner pipe so it wasn't his problem. Do anyone have a suggestion as to what I can do?