I completely understand how you feel. I go out of my way to help someone and they can't even manage to give me a thank you! I can't stand that, I'm not here to be walked all over me and taken advantage.

Been feeling a bit under appreciated as of late, so I feel I can relate to this entirely. It's like the more I do for someone they more they expect me to do for them.

I'm sorry you feel invisible, people sometimes don't realize how much effort and consideration you put into helping them.