Customer called us out for a repeat blockage in the upstairs master bathroom group. I inspected the piping in the basement while running water upstairs and could only hear water splashing up top. I then watched the toilet upstairs and could see it wavering a lot. I flushed the toilet which cleared the blockage. I then checked downstairs again and could hear the water running at the base of the pipe. I recommended the customer have a camera check out the pipe from the clean out in the basement and set up an appointment for 12/20/2025 8-11. I recommended not flushing toilet paper down the line until a camera has checked it out.