I never give tzeddakah to someone i do not know…maybe a dollar or so but i first make sure that its not a…
1. Scam
2. Money that will be wasted on stuff like drugs/alcohol
3. Goes to where they claim it will go
To that end, if i would get a guy coming to my door asking for money, i invite them in, offer refreshments/food, talk to them see if they are legit, give money.
Over the phone stuff….no i have no idea who the other person is, if they are who they say they are and all that stuff….I’m very weary of even giving online because i know that very often even big organizations like will either squander the money or most of it doesn’t really go to where they say it goes.
I would get a caller ID, and just block those numbers via the phone company or something. You can probably report a certain number for harassment if it’s that bad…but don’t cause a hilla hashem if possible.