If visiting my local supermarket for groceries etc you are greeted by well organised professional charities seven days a week. A rotation of different charities every day. All seeking to guilt trip you into donating, all earning a wage to collect money that goes to who knows where? The relentless ones soon can't wait to get rid of me whenever it's busy. I just ask them what model car their boss drives, what part of town he lives in and how much of their collection actually gets through to the people they are collecting for after office rent, their wages, their bosses wages, profit for growth etc. If requested I will help in other ways but I rarely hand money over for nothing. As far as being personally targeted by a scammer they would be paying for it in the long run. I would make it my business to destroy them even if it costs me even more money or time.