I've always wished for this in every communication medium. Charging someone for calling you would also block them permanently, so almost no one is going to do

I've always wished for this in every communication medium. Charging someone for calling you would also block them permanently, so almost no one is going to do this to their friends just to mess with them. There should be no appeal: if someone wants to charge every caller, that's totally fine. People will stop calling them pretty fast. Likewise I would let the callee choose the charity, or even keep the money. All that matters is that if you are calling someone who wants your calls you won't be charged, and if you aren't, you should be. If you aren't sure, you pay your money and take your chances that you are in fact imposing on someone else. I can't see how this would hurt anyone of any socio economic level other than spammers. If you are calling someone who doesn't want your calls, you are a spammer.