[httpagent]

I wondered the same thing - my conclusion is that it's an intimidation tactic.

[UVB-76]

Alternatively, phone operators are instructed as a matter of course to record details about the phone calls they receive...

[officemonkey]

More likely the poor operator couldn't answer his question, so she was going to pass the details up to a supervisor and have the supervisor deal with it.

Later when the supervisor got on the phone, she just hung up on him.

[powertower]

You came to that conclusion because you knew that the operators don't ask contact info for every caller as standard procedure?