Who called from 7709885506

keep calling but leave no message  who are these people

This number calls an nobody says anything

called at 1:08 Dec 8. Indian speaking person said he was from some pharmacy. It was a robo call as there was about a 10 second wait before he spoke after a click on the line. I asked him firmly to take our number off his call list.

My phone rang at 5:00PM Friday from 770 988 5506. When I answered I received no replay.
I told whoever called to "Go [***] yourself".

I am on the do-not-call list and I want to report the above number as calling my landline phone constantly.