At the pharmacy

I went to buy some Sudafed. Have to get it from behind the counter. They ask for my license. 

Cashier: You’re not in our system. 

Me: Yes, I am. You have my name wrong. It’s under ******. 

Cashier: Oh, there you are. Your license doesn’t match our system. The number is the same, though. 

Me: I know. 

Cashier: That’s kind of dangerous, you know. You really need to go get your license changed. 

Me: Did you SERIOUSLY just tell me I need to get my driver’s license changed because it doesn’t match your system?

Cashier: Yes, well, you can change it. We can’t change your name in our system.