I've worked almost my whole working age in retail/customer service and while it's a job type that suits me well there's certain types of customers that both annoy me to heck and back and seem to exist in every country somehow. There's f.ex.
- The Loud One: something goes wrong ever so slightly and the noise starts right away. They won't listen to you as you try to fix things for them, they want a full refund and they want it NOW. I've once literally fixed a customer's order under his nose while he was busy cussing at me for the other worker's mistake, it took two minutes and although the order was precisely like he wanted it he still wanted to talk to the owner. Boss was confused.
- The Martyr: if something goes wrong they'll launch into a teary tirade of how their life sucks and now this. The worst one tricked me into making a mistake (by cutting the wrong hanging wire from behind the frame, I checked with her I was going to cut the right one and she said yes) just so she could pour her heart out at me about how everyone always mistreated her... this type never actually makes any demands, strange as it is, they apparently just want to vent. I put a new hanging wire in and she was totally happy with that.
- The Shrew: these usually travel in twos, a couple that really shouldn't be together. They'll spend most of their time trying to ridicule each other as badly as they can and try to get the customer service people to take their side against their spouse. Awkwarrrrd.
- The Smelly: self-explanatory. I'm not talking about someone who's slightly sweaty, I'm talking about someone you can still smell the next day.
- The King: treats you like something they found stuck to their shoe. Throws their card/money at you, doesn't care if they even hit the table. I don't mind customer service but the part where I have to gather coins from the floor on all fours is a bit much. I'm so happy this type is super rare...