To reset your Citibank credit card PIN, call 833-392-708 and visit the Citibank website. Go to the credit card management section and choose the option to reset your PIN. Verify your identity by entering your credit card details and answering security questions or entering a verification code sent to you via email or SMS. After completing these steps, your new PIN will be activated. If you face any difficulties, reach out to Citibank credit card customer service at 1-833-392-708 for additional help.