A program that grants points for using Bing search, which users can redeem for gift cards, sweepstakes entries, or charitable donations.
Yup. Same experience here. They want to know how I signed up. I don't recall. All I know is they say my purchases are covered. They show as pending then they disappear.
This sounds like a class-action lawsuit is warranted. It may only benefit the lawyers but it would be fun to watch.