Got call today but no message.

On August 4th a female called and asked if I wanted a car insurance quote and I said ok, but I said I don't give out personal info on the phone.  She then said she would transfer the call to an agent.  After about 30 seconds she came back and said there was no answer the agent must be out to lunch.  I never received a call back.

I am getting called approx every two hours.  If I answer there is no one there.  If I call back they say it says it is a rental number and is an outpost and cannot recieve calls but that I'm suppose to call the number on my ID card?????