CitiBusiness®/AAdvantage® Platinum Select World Mastercard®

You can usually pay your bill online, on your credit card issuer's website.

If you're having trouble paying online, we recommend you call the phone number on the back of your credit card or 1-800-950-8114.

To manage your account online, go to your credit card issuer's website and sign in.

If you're having trouble signing into your account, we recommend you call the phone number on the back of your credit card or 1-800-950-8114.

Learn all about credit limit increases here, including instructions for some specific issuers.

Some credit card issuers allow you to submit a request online after you've signed in to your account.

You can also request a credit limit increase by calling the phone number on the back of your card.

When you request a credit limit increase, the credit card issuer may check your credit history, which results in a hard inquiry. This is a normal part of the process, and can cause a slight temporary decrease in your credit scores.

Closing a card will usually decrease your credit scores. Learn about how closing a credit card impacts your credit scores here.

If a card is paid off and has no annual fee, your credit scores will likely be better off if you leave it open and don't use it.

Remember, even if you haven't activated a card yet the account is probably open.

If you want to close a card, call the phone number on the back of your card.

If you didn't get an immediate approval decision, the credit card issuer will notify you by mail within 7–10 days.

The credit card issuer may also contact you to request additional information while reviewing your application, like proof of income.

If you're denied, you'll get a notice that tells you the reason or reasons why you were denied.

You may be able to find out your account status by calling the credit card issuer.

Last we checked, the phone number for the issuer of the CitiBusiness®/AAdvantage® Platinum Select World Mastercard® was 1-800-950-8114.