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When you turn off the water main to fix a leak then turn it back on the sediment that clings to the insides of the piping gets dislodged. So it's likely that the fill valve on the toilet is clogged with sediment. A few brands of fill valve are relatively easy to flush out (like FluidMaster). With the rest it's best to just replace the fill valve (with a FluidMaster)
I don't get the not helpful part since I gave you the solution to the problem you described. There is no other fix. Do you have more questions?Contact customer service if you want a refund.http://ww2.justanswer.com/contact-us