The caller claimed he had a brief survey regarding professional education that would only take a few minutes of my time. However, there were lots of people talking in the background and he did not identify the name of his company. I suspect this is a scam. Rather than participate, I directed him to the operator. I don't know how he got my name and phone number.
I have been receiving calls from this number every night between 6-8pm for the last 3 nights. I haven't answered because I don't answer from strange numbers. Never is a message left. Glad I checked here to see if it was what I thought - a spam call.