Q: I need to call Capital One customer service. What is the contact information to do this? What should I have handy when I call them?

A: Capital One’s credit card customer service number is 1-800-955-7070. This number is for if you have a question about your personal credit card account, such as a question about your billing statement or a fee increase. If you have a Capital One credit card but live outside the U.S., call collect to 001-804-934-2001.

There is also a phone number for online banking, if you have a question about your checking or savings account or other banking services. That number is 1-877-442-3764. Or if you prefer the Internet over the phone, Capital One’s customer service center is here. You can view FAQ or send an email to customer service, as well as a number of other things.

Need help dealing with the customer service reps? Make sure to have all your information ready before you call (such as account or card numbers, billing statements, or whatever you think you may need, depending on your issue). Call during non-peak hours, such as early in the morning. When you do call, be polite and courteous. If you’re frustrated, take a few deep breaths before calling. The more worked up you are, the harder it will be to get them on your side. Good luck!