MBNA Telephone Number 03456 062 062
To contact customer services staff at credit card company MBA, which is now owned by the Lloyds Banking Group, it should not be a problem, as you will find all the necessary information here.

Contact MBNA customer service by phone
For customer support, general enquiries or to report a stolen or lost MBNA card, the customer support telephone number is 03456 062 062. The number for the financial services group that you need to apply for a credit card is 0800 068 878, while to arrange a financial transfer, you should use 0800 933 944.
Do you want to talk with MBNA online?
MBNA’s customer support page is headed by information on how to log into you account, activate your cards or change your address. The site is MBNA. It also offers contact information for MBNA insurance questions and contains an extensive FAQs section. You can write to company at Customer Services, MBNA Limited, P.O. Box 1004, Chester Business Park, Wrexham Road, Chester CH4 9WW.