I use a pinbrush, a pig hair brush and a steel comb.
Just go to the nearest pet store and buy a comb

I use the brushes so little, they just go past the matt, they dont ''fix it'', but the comb goes through the matt and solves it.
Just go to the nearest store, and buy a comb, either plastic or steel
Plastic is OK too, but I prefer steel for my yorkie.