You can call the Capital One Quicksilver customer service line at 1-800-227-4825. It's also possible to contact them on chat by logging in to your account at capitalone.com or from the Capital One app.
Another possibility is contacting them on Facebook or Twitter. They're really responsive there.
Lastly, you can contact them by mail. The address is:
Capital One Attn: General Correspondence P.O. Box 30285 Salt Lake City, UT 84130-0287
There are several ways to reach Discover it card customer service, including by phone, live chat, and mail. But there aren’t unique options for each of the various Discover it credit cards. All questions go through Discover’s general customer service department. But you’ll be able to talk to an actual U.S.-based representative whenever you call. And there’s a wide range of contact methods aside from the telephone.… read full answer
Here’s how to reach Discover it card customer service:
Phone: 1-800-347-2683. You can call this line 24 hours a day with any questions you have about your card or account in general. If you’re located outside of the U.S., you should instead call 1-801-902-3100. The Telephone Device for the Deaf (TDD) number is 1-800-347-7449.
Live chat: If you’d prefer to type out your questions (and get a written record), you can use Discover’s live chat instead. All you have to do is log into your account for this to work.
Twitter: You can send questions to @Discover.
Facebook: Discover’s Facebook Page lets you securely (and privately) message Discover it customer service.
Mail: This will obviously be the slowest method of contact, but you can send any general correspondence to Discover’s mailing address: Discover Financial Services, P.O. Box 30943, Salt Lake City, UT 84130-0943.
Discover’s customer service is also 100% U.S.-based, so you won’t be transferred to any overseas call centers. If you’re looking for good customer service, Discover is among the best of the best. It’s been the number one credit card company for customer satisfaction three years running, according to J.D. Power and Associates. Discover’s WalletHub Satisfaction Score of 93.32 also ranks 5th among major credit card issuers.
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