A plumber, or DIY homeowner with basic skills.
plumber
call the plumber
[object Object]
NO, it's ridiculous. This means there is a blockage in the toilet or the main drain. If you can't fix it, call a competent handyman.
Sunny Plumber - Fix Toilet
Horologist
a plumber.
stylist
a boatwright
think the drain may be slightly blocked. Your best bet is to call a plumber now to fix it. If you leave it too long you may have toilet water coming up in other areas in your house. You can try to fix it yourself but most of the chemical treatments don't do a lot.
Somebody left the sink water runing and somebody needs to call the plumer to fix the toilet
Aircraft mechanic
That depends on what is wrong with it.