What advice do you have for a person who needs to tell someone else to go away but who's resolve goes out the window every time that person calls?

Wait until your resolve to tell them to go away grows bigger than your need to be nice.

I think there's literally millions in this situation. Most are either dealing with ex's who they inadvertently keep encouraging because they answer their calls or texts, or a friend who wants things to be more but doesn't get the hint.

Create a barrier like changing your number if necessary

If I was the person you wanted to lose, I'd rather you just come out and tell me. Less cruel that way. Good luck!

stop answering calls? seems logical.

grow some b alls😁