The 12% back using Capital One card for shopping through Expedia is a very big scam. I had a very bad experience using this card for a flight ticket.
This browser shopping extension (used to save you money on purchases by trying coupons & offers special promotions on partners), is iffy at best. Sometimes it works fine & you get a rebate for a gift card. But There is NO CUSTOMER SERVICE. They have No Phone Number to call. All you can do is email them or 'chat' with a bot. Emails are NOT read and/or understood, or they are Also answered by bots. I made a purchase through a link on their website. It brought me to the appropriate website & I then made the purchase. NO REBATE. When you email them, they give you a canned answer, & you can tell they didn't read what you wrote, or they are a bot. Ultimately I didn't get the rebate I should have gotten.
CapitalOneShopping.com raises serious red flags, resembling a scam. Not every purchase is tracked, but the more alarming concern is that once you build up a significant cashback balance, they abruptly close your account, confiscating all your earnings. Their excuse is a vague claim of violating terms and conditions, yet they offer no detailed explanation. To make matters worse, the account termination notice comes from help at accounts.capitaloneshopping.com, an address that appears to be nonfunctional. Any attempt to reply is met with an error stating: "Address not found. Your message wasn't delivered because the address couldn't be found or is unable to receive mail. The response from the remote server was: 550 5. 1. 1 Requested action not taken: mailbox unavailable". It's best to steer clear. Opt instead for trustworthy cashback alternatives. While their cashback rates may be lower, they won't snatch your rewards, and they provide real cash payouts—unlike the mostly useless gift cards offered by CapitalOneShopping.com.