I have not gotten any responses to my PM's. Nor have I received any updates from you. So I'm not sure who you've been on the phone with "non-stop". The last note I have from you advises me to "join the other thread" which was closed. That note is from 30th November.
The bank who issued the check shows funds paid the day after deposit. This is done according to federal law. Your bank has an image of the check and deposit. The check has completed its collection cycle. They or you can easily, again, verify the authenticity. If your bank has not given you funds, they are in violation of Federal law USC Title 12, Chapter 41 and CFR Title 12 Part 229 (Regulation CC). Question: Why haven't you done that yet with your bank? What precisely is your bank telling you about availability of funds? You're making false accusations when the factual remedies are evident and you are not availing yourself of them. Call your bank:report exactly what they stated as to why they are in violation of federal law. Call the check issuer, or have your bank do so, advise what they stated as to the authenticity. Anything less is just more obfuscation.
USPS has advised they have no record of a claim for that package. Can you share with me the date filed and claim number?
"The buyer is lying"? Do you have something factual to back up that accusation? Furthermore, you make an accusation of insurance fraud?
I've preserved the package for USPIS as advised and they can be the judge of that.