Can you contact the manufacturer and ask why your couch is pilling? It should not be. Have the make and model numbers in hand when you call.
Heather: maybe something like this will help
Short staple fiber is going to “pill” no matter what. All you can do is trim them with a shaver or small shears.
Use one of those sweater shavers. I do it all the time. Works great and takes just a couple of minutes