Debt Consolidation

Is credit card debt considered an open account or a written contract?

I live in the State of Georgia and am being sued over an old credit card that I defaulted on. It has been more than 4 years but less than 6 years since the date of default, so depending on whether credit card debt is considered an open account or a written contract in the State of Georgia, the Statute of Limitations may or may not apply. The Staute of Limitations is 4 years for open accounts and 6 years for written contracts. Does anyone know for certain which type applies for credit card debt in Georgia? The account is with Citibank MasterCard and was opened in the late 80's or early 90's. Thanks.

Tags: 6 years, citibank mastercard, contracts, Credit Card Debt, open accounts, state of georgia, statute of limitations, staute of limitations