Rider with a weapon

So I pulled away from a pickup in Nashville the other night. Guy orders from a profile with a woman's name and when I pull up he is staring me down and has a fixed blade knife on his hip. He starts trying to get in but I had locked the door, luckily. He says the name on the app and keeps trying to get in but I cracked the window and told him 'Not with that knife.' And pulled off leaving him cold. I stopped just past him to cancel the ride, but I wasn't wrong here right? I'm unarmed and a knife is problematic when considering self defense in a car. Would any of you have picked this psycho up?