"Shaun Roger" from Knowledge Net says he is not allowed to divulge the address of his company. I requested that he add the telephone number he dialed to his Do Not Call List and he politely agreed then said good-bye. Since 2014 I have had six calls from Knowledge Net and every time they have had a different caller id. Also, they never provide an address, so the conversation always ends there.
(Normally I use the handle Switchboard, but since someone else beat me to it, will have to find another.) In less than ten minutes, received three calls from various assistants to assorted bosses, asking to speak with our VP Marketing. The other numbers in addition to this were 312-614-1338 and 540-491-0242, which both have their own complaint pages. Told all of them that we don't transfer calls without knowing the reason and to remove us from their calling lists, then hung up. After three years, I've really had it with these people.