Past my bedtime

Mom, in a message, mid-evening: Hi. I got another one of your statements from TIAA-CREF-- I thought you said you changed your address with them? Did you want me to keep it? Give me a call. Bye.

Mom, in a message, around 9pm: Where are you?? It's past your bedtime. Call me.

***
Mom: Hello. Where are you?
A.: Walking home from the metro.
Mom: Where's your bike?
A.: I left it at work. I'll bike home tomorrow.
Mom: So, I got your statement...
A.: I did change my address with them. I'll call them again.
Mom: Okay.