[blm]

>> Don’t ever respond to a solicitation or a proposal on the phone. The urgency is a disguise.

> A disguise for what?

I think:

Something not quite right or something worse.

It's easier to get away with things when they aren't face to face. People often know when they are trying to get away with something and leak the truth or information about the truth in body language.

Also it is quicker to communicate over the phone. If they are desperate they can deliver a proposal( ask for stuff?) over the phone within a quicker time frame.