Ego problem??

Someone explain this to me, whenever I say the things that I can do intellectual wise I have to prove it. The people who want proof are not giving me a job they're not introducing me to someone who will give me a job but they need proof that I'm good at what I do. To top it off, it's my professors that do this. I have professors from different countries so they speak multiple languages and I speak multiple languages the second they see I speak more than them it just cannot be true and they try to humiliate me (which never works). But I'm not trying to compete with my professors I don't think I'm better I just wanna get my degree and move on. What's up with that?