Here is a list of times one one day, 5019-2017, that i received from 727-308-3513:
1034am, 10:44am, 11:15am, 12:14pm, 1:59pm, and 2:05pm.    All of these calls in one day. The last one i answered.
It was a foreign (philipines?) woman,  saying she was calling from insurance solutions.  I yelled at her "i don't want anything!!"  and hung up.     This number is now blocked.  It came from st.Petersburg, florida.  I am fed up with these lousy people calling multiple times every day.   I have an unlisted number.   The do not call list does not work.   Does it really exist???