I received receipts each time I donated.
We have been giving to Upward Foundation for more than a decade. They have always been polite on the phone and as far as I know they have left receipts each time. I especially like the fact that often the same person will call for a number of years. They all seem grateful on the phone for a donation. Yes, twice in a decade they have missed picking up my donation, but many of their staff are volunteers and that's not a bad record.
Donations Not Acknowledged.
BEWARE making donations to Upward if you need a receipt. We twice had the driver collect really nice donations (bicycles, expensive clothes and appliances), but we can't get a receipt. The driver didn't leave one, and the manager doesn't want to mail one. If you need a tax writeoff, you need a receipt, so donate to a different charity. There are lots of worthwhile charities, and most are thankful for donations; Upward's headquarters is just difficult and it seems donations are unappreciated.