New DoorDash Scam

So My fiancé and I picked up a $26 cash order from Pizza Hut. We pick up the order and are about to head to the customer when they call us and say the order isn’t a cash pick up order, it’s a credit order so he will not be paying. This immediately struck us as odd cause we’ve NEVER had that happen before. My fiancé tells the customer to give us a sec while we contact DoorDash and the store to confirm this and he immediately started to get angry with us and tell us that we were wrong. My fiancé kindly hangs up and while we’re trying to contact support, this man spam calls us. We waited just in case he wasn’t lying, but then DoorDash support called and said that it was a scam, cancelled the order and blocked the man from ordering again. Pleeeaase be careful and always double check before trusting a customer with something like this! At the end of the day, if we would’ve dropped off that order, we would’ve been paying for this man’s food🤧🙄