There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

No I drew up my own contracts and filed the paperwork myself

Additionally, ATCP 134.05 says that if the tenant provides a consumer credit report from an agency that compiles and maintains files on consumers on a nationwide basis and it is less than 30 days old, the landlord may still run a credit check but at its own expense.When I inquired with the company, they replied: "These laws are in place to ensure that you, as a landlord, are not profiting by incentivizing multiple applicants to apply when you have no intent to rent to them.

private real estate syndications are another option to passive RE investing, but IMO require a lot more research before buying than REITs where you have a professional team managing under SEC regulations, with public accounting and filings.

Should I file suit to make them sell the property?

But you are required to file a Schedule E in the US every year showing the total rents you received, the expenses you had against those  rents and your subsequent profit or loss. 

They took 3 months to file for the permits despite having all my paperwork in less than two weeks.

Home warranty programs charge a trip fee every time you file a claim, and they use that fee to compensate the vendor.

They have failed to renew my entities with the Secretaries of State multiple times, have billed me wrong amounts, and GREATEST OF ALL, have cost my business ~$50K in cumulative TAX PENALTIES due to negligence in filing for a tax extension, failing to walk me through my tax filings and needed payments, and failing to file an abatement promptly.

While I haven't had to file a claim with either company, I appreciate that Proper Insurance is backed by Lloyd's of London.