<prompt> Human: I recently bought a collectible from a US store, paying full price for up to 12 days delivery.12 days have passed, and after having them lie to me multiple times, they finally said they still havent shipped it, and it will take another week or so to.I no longer want anything to do with this site ever, can I cancel my credit card Mastercard payment, have my money back and dont care about those close-to scammers again or will I get into trouble? The package has still not shipped, according to them.Thanks  <response>: Ask for a refund. They didnt meet their obligation of 12 days so theres your reason. Say you were on a deadline and now you no longer need it because it passed. 