My downstairs toilet bubbles when washing machine drains.
I have a 2 story townhome and been having problems with clogged toilets. It first started by bubbles and girggleing sounds every time I washed(washing machine is upstairs almost above bottom restroom) after some time of this bubbling the toilet overflows. I have called a plumber and they snaked everything out to the main taking off the toilet. 4 days later when we had a chance to put back the toilet I wash some clothes and the bubbles are there!! They did not go away how can I fix this problem? Please help!!