Who called from 9284406723

Called on landline in afternoon. Caller was listed as unavailable. Did not leave a message. Caller unknown,

received a call from this number a couple times, returned call back said its regarding a public service announcement?

3 phone calls from this number within 10 minutes.
I never answer calls from numbers I do not recognize.
Very annoying to receive so many spam and nuisance calls every day.

"public service announcement" about lowering your health care costs -

Called three times while I was on phone. Do not answer #'s I don't know. Looked back and received other calls with no message.