Don't be surprised if they come back, and at that point, you can renegotiate the terms of your friendship if you want.

I had (and have) a dear friend - I'm talking she was there in the bathroom with me when I got my first period, and sang me a song to help me relax enough to pull out my first tampon (tmi, I know, I'm sorry, but you get the scope of things now) I was her maid of honor, and she spent a week at my place when she decided to get a divorce.

Throughout all this time, I would do something that I saw as neutral, and she would fly into a rage and demand an apology. She was the undisputed queen of demanding apologies.

One day a few years ago, I just refused to give her one. I was sick of it. I told her that us being friends didn't mean she got to dictate my behavior. We didn't talk for a few years, but then she got back in touch and we're good now, and she hasn't demanded an apology since. I think I successfully renegotiated the terms of our relationship.

Also I very much related to Jackie calling you cheap. To many of my friends, if they've got access to credit, then it means they earned that money and must spend it. To them, my 820 credit score means I should be living the high life. We have such very different definitions of "freedom."