I rather not say, sorry! It was the ML, not the shop, and I feel bad for naming and shaming her tbh. So if it's OK, please don't ask.
The shop owner was nice and understanding. I got a chance to speak to him privately when the ML calmed down and left the room. He refused to take my $50 and politely gestured I can leave.
This will probably be my last ML experience, ever.

