These people call over and over and over, obviously from a "boiler room" in which many others are speaking. The caller inevitably has a line of patter that simply brooks no interruption. When I tell him I don't want what he's selling, and ask not to call again, he just keeps jabbering. In a week or so, someone from this number calls back!
Unknown, unsolicited, and unwanted telemarketer trying to sell medications. The telemarketer was male, with a heavy foreign accent, asking for someone by first and last name, and then hung up on me when I did not answer quickly.
FYI: I receive many of these kinds of calls every week. I suspect that they must have an idea that I keep registering complaints about these companies phone numbers to the National Do Not Call Registry:
https://complaints.donotcall.gov/complaint/complaintcheck.aspx
Many times over the past several months, the telemarketer of whatever drug-selling company hears my voice, and then it's followed by a moment of silence. I suspect that they have notes to watch out for a "female voice" and then they hang up on ME. I suspect that they know that I've reported on them or one of their co-workers before.
Keep registering the complaints at the above website and put these worthless companies out of business for good.