I hang up after few seconds of answering when I discover the call is about collecting donations or charity, and I consider these few seconds as a donation.
Charity is a gift to embolden Government corruption.
If 10% of the military budget goes to scientific research, it will be more than all the donations collected for scientific research and cancer research in the country.
Real charity is changing the government to a more human civilized one with a global and future conscious.
In the mean while, keep collecting pennies for patients if it makes you feel that you are kind.