If you have never worked retail or any type of customer service job in your lifetime, there are three types of customers you have to be very aware of besides 'The Karen'.
We've all been there. We bought something, or received a service, and it just didn't work, or work out. Maybe you've called a business for information and gotten squat out of the clueless (or disinterested) person on the other end. Whatever the reason, you're left angry, confused, unfulfilled, or all of the above...