[Mikuballo]

I can assure you they won't call your bluff.

This is the latest joke of a response I got today:

"Hi [removed],

We aren't able to provide additional details from our investigation.

Sincerely,
[removed]"

That was the whole email, how do you think I should proceed?

Hilarious.

Tell them that further Information Is paramount to establish whether the correct decision was made with the claim. Also ask them the reason(s) why they're refusing to provide details that justifies their Investigation.

Thoughts on anything I should add or modify on this response?

"Further information about the investigation that was done is required from me in order to establish that the correct verdict was made on the claim. Please provide this information.

I will also ask why this request for information on the investigation has been denied and why you are refusing to provide information that justifies the investigation."