Or you learn some telephone manners…

Crimson: (answering tech support call) Servicedesk, Crimson speaking

Caller: *crunch* *crunch* I am getting an error that my certificate is invalid *crunch*

Crimson: Could I please have your computer name?

Caller: *crunch* I don’t see it *crunch* *crunch*

Crimson: Would you like me to call back when you’re finished eating?

Caller: *Crunch* Oh sorry (silence)

Crimson: If you look at the top bar of the window you will see the number

Caller: *CRUNCH* *CRUNCH* *CRUNCH* I don’t see it *CRUNCH* *CRUNCH*

Crimson: I’ll give you a call back when you’re finished.