This number has called me at least 2 times a day, automated robotic Morgan Freeman voice trying to sell my health insurance.

Answered the phone tried to sell me low cost health insurance, did not like the loud horn I played for him called back two times each time getting the horn.

Well your story proves this:
Whistle/Air Horn:
I have good news and bad news.  The good news is that the whole whistle/air horn thing will damage hearing.  The bad news is that it will be your hearing that is damaged.  That whistle/air horn thing is an urban myth because telephones do not transmit at a frequency to do any damage,