I was called by this number and a male identified him self associated with as a "pharmacey" - this was the same excuse that phone number 1-623-238-6021 used on the yesterday but and the day before but it was a female then.
Got a call form this number and they asked what medications I took. I told them I took some controlled substance and they kept asking if I took any other meds. When I insisted I did not they said they could not supply the controlled substance and that was that. Hopefully they will not call back. I would advise telling them you take morphine or ritalin, which they cannot provide, and then they may cross you off of there list.
I also noticed that it took them a long time to answer after they called YOU. Much like those cold sales calls. When other posters say there was no answer, this may be due to the long time it takes them to come on line to ask you questions.
When I called back (with my ID blocked), I received a message "Jennifer Leach from the Federal Trade Commission" (?) about my reaching this number because I had been directed to it by a phishing email. Trouble is that I didn't call it for that reason. Interesting.