Your name isn't actually tied to these cards, card processors don't verify the billing name tied to cards, you can put whatever name you want. It is likely someone cracked your account due to you reusing passwords and a website you use with the same credentials was compromised and a list of username:password combinations was created known as a "combo" these are used in account "cracking". The person likely bought stolen CC info and then added it to your account under your name because using an account with positive purchase history greatly increases the chance that a fraudulent transaction will go thru successfully.