I've learned by now that having templates on file for
boiler plate responses by the IRS (such as a CP 2000) are the best way to handle this sort of issue.
Your boiler plate response is insulting and only further supports the poor ethics of Allianz Travel Insurance.
Countering a boiler plate notice from the IRS with
a boiler plate response from the firm accomplishes two things:
With CP 2000's, often
a boiler plate response allows the CPA to accomplish the task in less than 15 minutes and as such, would allow them to not bill you.