"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.
My assistant was busy so I answered the call in our standard company greeting. A male voice said... "hi, my name is Eric and I'm sorry for the interruption but do you have a second for me to tell you why I'm calling?" I said no and hung-up.
I'm glad I checked the number... it appears this is one of the many strategies they use.
Didn't answer the phone the first time because I was reading the reviews. They called a second time. The company is Log Analytics, it's a business intelligence company. They didn't have a problem giving their name and company when asked.
I have an unlisted Skype phone number that I rarely give out so when a call comes in that I don't recognize it is immediately suspicious. This number called me today. I did not answer and per usual checked online. Sure enough - unsolicited caller.