Quote from @Brenda Garcia: Notify the complainant that you investigated twice and see no evidence of smoking.

Typically, when I work with RE investors, we'd make a preliminary legal plan to ensure that both the legal and business goals align before creating any sort of entity set-up.

I am just starting the investigation to figure out if this could be profitable.

Ensure that the net operating income (NOI) meets your investment goals.Future Developments: Investigate any future developments or infrastructure projects planned for the area, as these can significantly impact property values and rental demand.Financing: If you are planning on taking out a loan to purchase a property in this area it is imperative to make sure you are getting terms that align with your investment objectives.

I called the local cops and they said that the ATF is doing an investigation into the company.

And sometimes banks are the ones who mislead such a home buyer, by issuing pre-approvals and approvals to sign a contract, but then back out when more sophisticated underwriters spot an issue (in buyer's income, credit score, DTI, property value and etc.) that loan officers who gave preliminary approvals didn't want to see.

Was your tenant offered a preliminary inspection during the two weeks prior move-out as required by law?

Here are some of the responses I received over a year ago from Zillow:First response:“I appreciate your patience while I investigate the location of these funds.

Sorry, but if you want cheap rent you can expect cheap services.If you're serious about investigating or filing charges, hire an attorney. 

I would investigate the tax implications of your plan to sell the existing house.