I feel stupid

..when the company asked me to do things that is far from my job scope. No it's not about becoming someone capable/ be able to multitask but this is about me, the "practical trainee" who's been showered with too much work. It's okay if that work is really related to Safety and Health but what is happening here is that I'm the one who's responsible to do the mechanic tools list?I'm the one who's applying and managing the e-OSP?Oh crap.I want to go back home. I want to search for a better company who's never taking advantage of it's worker.