A blocked toilet may be the result of a blocked toilet drain or it could be that there is a foreign object obstructing the sewer pipe.
Kitchen sinks, bathroom basins and other drains can become blocked from excess hair, fat and other organic matter. If you think you have a small blockage (a child's toy, or a toilet bar refresher for instance), you can use a plunger to try and dislodge the blockage.
If you suspect the problem is more complicated and you require a plumber call Blockage King. No job is too small .