Who called from 9080594744

I was told they were "Emergency Medical Care"
Asked who they were, I was to a security company.
They were selling a medical response system.

Received a call from this number twice; both times there was a recorded message that simply said "good bye"

Have received several calls from this number. Concerned that it may be attempting to garner info from my phone. Anyone know anything about this?

I get this call over an over again. Usually do not answer but just a few minutes ago I finally did. I got the same recorded "Good Bye".

Keep getting these calls on my CID almost every day
Never leaves a message.
Called back # and message is: THIS NUMBER NOT IN SERVICE!
I wonder if VERIZON can find out who this number belongs to.