Jersey Mike's Subs

Worst customer service ever. Hadn't even left the parking lot and went back in to get my cup filled and the owner himself yelled at me about their policy for not allowing people to fill their cups after they left the front door. I understand if I had driven off, came back 2 hours later and expected a drink, but seriously? Also on how I wasn't allowed to use the restroom for longer than 5 minutes. I'm never going there and the whole experience has put a bad bitter taste in my mouth for all JM stores.