Tell them, “Yes, and the drunk on the corner assured me that my contribution would go to food.”
“Money is fungible and I will not support an organization that funds abortion, period!”
Years ago working for a company that was intimidating us to donate to United way, they said we could earmark our donation. But on further investigation I found they kept the same allocation to each charity as before so your donation was replaced by fungible funds. So they were lying. You could not direct your donation to charities you wanted. They decide the allocation.
However, United Way says you can make donations to specific charities. No you can not.