I can't make money for you SIR

This guy came in with a script for his wife for Tramal. He asked me if this will help cure her. I said no, it only provides temporary pain relief. He said will she get better. I said it depends on what type of pain it is. This is provide pain relief for the meanwhile but it will wear off. He should take her to see the doctor if it doesn't get better.

Then he asked me "Can I have a smile from you pls?" I smiled but I'm thinking WTF. 

He leaves then comes back later and askes me where's the panadol section. He picks up a packet of 24 pack Panadol tablets and askes me, is the price for 2 pack or 1 pack?".

I look at him and said: "Its for 1 pack of course."

He wanted to buy them: $4.50. He produces a credit card. I said sorry there's a minimum purchase of $10 for card. He snaps back: "Listen, there's a long queue of ppl outside and I need these tablets now. I got no cash". I go: "there's a westpac ATM right outside, maybe you can withdraw some cash from there." He goes: "All the atms are closed. I can't get any money. My wife is having pain at home. She needs these tablets urgently so you will have to give it to me no matter what. What can I do huh?"

I go (with a HUGE smile on my face): "We have a policy in place. We call it minimum purchase of $10 on card. So if you can't withdraw cash from an ATM, you have the other option of purchasing other items in the store to make up the $10 if you insist on paying with card."

He goes: "You're kidding! But there's nothing to buy here. It's just medicines!!"

I go: "Well we are a chemist afterall. You just purchased the Tramal which is a medicine. And Panadol is also a medicine. If there's no other medicine you want, you can buy some lollies or chewing gum as well."

He goes: "There's nothing else I want to buy here. You have to do something"

I go: "Well I can't help you then. There's nothing I can do. I provided you with the options. I don't know how to make money for you." 

He left without buying the Panadol coz he didn't have cash and he was too lazy to go to the ATM (there's like 10 different ATMs in the suburb as if all of them are closed). He refused to buy something that was $5.50 to make up for the minimum purchase. I gave him so many options, if his not willing to do something about it and just ignore me then bye bye....