An assignment and assumption agreement is used after a contract is signed, in order to transfer one of the contracting party's rights and obligations to a third party who was not originally a party to the contract.
Also called an assignment and assumption. An agreement in which one party transfers its contractual rights and obligations to another party.
A cardholder agreement is a legal document outlining the terms under which a credit card is offered to a customer. Among other provisions, the cardholder agreement states the annual percentage rate (APR) of the card, as well as how the card's minimum payments are calculated.
The 'easy' way to assign the contract is to have a one page document stating that for some consideration, the 'buyer' transfers/assigns the contract to a new 'buyer'. Executing (signing) the assignment and receiving 'consideration' (eg $2000 or whatever) would then extinguish your rights to the contract.
If you are looking for information specific to your account, contact the bank or institution that issued your card. By law, the issuer must make your agreement available to you upon request.