a. express sympathy for his frustration and ask additional questions: do you know why you are no longer entitled to Medicare benefits? Who notified you that you were no longer eligible? Have you contact Medicare to resolve this?
b/c. Yes, it would be wrong and illegal to adjust the dates of service. Doing so would be fraud.
d. The clinic could be fined and/or risk losing their Medicare certification.
Well it could be health issues to the unborn child...
That it could spread and go global or they could try and use new vaccines and they could cause them