Not that I only think I am being underpaid. With all the things I am doing at work, those admin tasks, like everything do… I know I deserve more.
Reality is, pag naghahanap ng trabaho, binebenta mo tlga ung oras mo. So it is not solely up to you kung how much you "deserve". It is something to bargain with your employer dahil tinitimbang din nila if your time is worth the money.
So first, kung tingin mo tlga you deserve more, then ask for a raise implying that you will leave if you dont get it. If they agree with you, you get your raise. Pero kung tingin mo madali ka mapapalitan by hiring someone else, perhaps they don't see your worth, or you overestimate efforts.
Either way, kailangan mo maghanap ng iba.