How to not pay attention to someone and act all uninterested to make them go away and stop talking . DON'T SAY IGNORE THEM!?

Ok first things first. The word you want is disinterested, not uninterested, no such word exists in the English language. Second, just always be busy wink wink!! You're always on your way out the door, you're on the otter line, you have a house full of company etc. when a person hears excuses all the time like this, they just stop communicating because they get you're not looking to bother with them. Good luck

Ignore them.

I don't know what else you expect to hear.

"Not pay attention to someone" means to ignore them. You seem confused as to what the word "ignore" actually means.

That is rude. You can politely and excuse yourself. I have to make a phone call, Ted just walked in.