SPAM is just as pathetic on the phone as it is by email

I just got a phone call from some Toronto number that is unknown to me

I said, “hello, Daniel speaking!” A female voice replied “please wait for an important message; all of our operators are currently on hold”

Are people expected to take some unsolicited call from an unidentified organization/machine, only to be put on hold from the get-go?

Not only was I distracted from what I was busy doing, but I was expected to just sit there and wait without any good reasoning; how utterly disrespectful! Have marketers' ethics sunk so low as to require some sort of SpamCop for the phone? Obviously, I hung up immediately following the above-quoted “introduction”