Who called from 7149757613

caller said their company purchased my credit card debt and that I could pay it off or lose my credit standing

Might be a good idea to contact the credit card company directly.  You have no way of knowing if this is legitimate or an attempt to scam you.  There are listings for National Asset Services, Premium Asset Services, and probably a dozen others.  Call your credit card company or bank before you give these people any money.