PLUMBER RECOMMENDATIONS PLEASE: My kitchen pipes are causing backup into my bathtub (yes, it's as gross as it sounds). I had someone come out to the house who claimed to fix the problem with a $900 dig to remove a blockage. Called again when it returned and he cleared the pipes. Now, it's doing it again even though we followed all recommendations. Of course, he's claiming it's not his work, it's just the pipes. WHO can help that will find a solution so this quits happening AND can back their work?! Apparently it's more important to create a temporary fix so you can charge someone $200 every time you have to come out to their house...