Everyone’s toilet is prone to blockages from time to time. The first thing you need to remember is don’t keep flushing in a desperate bid to unclog whatever’s going on down there. Get hold of a plunger and see if you can clear the blockage that way. If the problem is too much toilet roll in the toilet, let it sit for a few hours and then try flushing again once the paper has started to break down. A wacky tip: Have you tried fizzy drink like cola? Sometimes that works too. If not call your local plumbers.