Customer had a main line blockage that flooded the entire house downstairs with sewage, upon arrival after diagnosing, I pulled the toilet downstairs near the front door and ran my cable and was able to clear the blockage. The customer stop behind the toilet was broke, so I had to shut off the water to the home as well the flange was rusted and I wasn’t able to put bolts back in to set the toilet properly so I told the customer do not use the toilet downstairs and when the camera team come out, they will give a quote to repair the flange and find what was going on in. The main line felt a lot of turbulence while running my cable didn’t pull back. Any evidence I believe it’s cast-iron pipe and the pipe is rusted.. Camera team scheduled to come out Monday, also schedule for a water mediation team to come out for water damage