Caller ID said, AUTISMAWARENESS  My call blocker blocked it.

Left no message

called land line, left no message.  i will block them

Don't know any one in Clearwater Florida. I am aware that Autism exists. However, there is no reason to call my number. They need to stop the calls now before I end up blowing a whistle in their ear.

Caller ID says "Clearwater  FL".  They leave no message.

I call back during business hours (using *67 to block my number).  Their outgoing message appears to be a pretty good computer generated male voice.  I hear, "Hello.  None of our representatives are available right now.  If you received a call from this number, we should contact you within the next day.  If you believe you received this call by error, please, press 1 to be added to our Do-Not-Call list." (I never do this as it can actually make things worse)  Note the failure to identify themselves.  A computer generated voice makes me doubt their skill with English.

So they spoof their caller ID, fail to identify themselves, and the call appears to be from the scam centric state of Florida.  Smells like a SCAM.