In my experience, college professors don't really know anything about if resume and cover letter are really marketable are not, so I wouldn't take them at their word. None of my college professors were any real help with finding a job, frankly. Still, if they have any connections to any actual people in industry, it couldn't hurt to contact them. The cold truth is, companies aren't sitting around waiting for you to call them or send in your application. You basically have to go get yourself a job if you really want one. It's a lot of work and it can be tough, but you need to keep at. Applying for 2-3 jobs a week isn't anywhere near enough. You need to be working any contacts you have, attending any meet ups as others have suggested...really anything to get your face and name out there.