You can count on the fact that the last place these calls originate from is Florida. Caller ID is easily "spoofed" and be made to read whatever the scammers want. The last thing they want is their real phone and contact information.
It is a pharmacy in India wanting to sell you medication. They have you number on robo call. If another person answers their phone before you do, the robo callo automatically hangs up. Just don't answer the phone. Don't let curiosity be your downfall. If it is a person who wants to talk to you, they will leave a message.