What are they doing to estimate taxes if not contacting the tax authority?

Thomas Stanley, author of The Millionaire Next Door, as one of the most important traits held by the majority of people who achieve high levels of success. 

I hate to be pessimistic, but the thing you have in writing says you have to pay the $50.Someone on the phone told you not to, but there’s no written documentation of that, or that the person who told you it had the authority to say it, that what they told you was the official and correct policy, etc.I suppose a good compromise would be to email them and ask for written (emailed reply) confirmation that you can ignore that invoice, that it was sent out in error, and that you should not pay it.My guess would be that no one will respond to your email, which to me would mean they’d be unwilling to give you written confirmation that you should ignore the invoice, which would mean you’d probably want to pay it at that point (in my opinion).It’s completely up to you, but that would be my thoughts on how to handle it.Kind of ridiculous of course that you’d even have to apply this kind of thinking to $50, but when the City has the power to attach a lien to your property I think it’s worth being a little paranoid.

Your lawyer will also be able to advise when it's time to get the authorities involved.

Ask the condemning authority. 

Sec8 in it's actual practical implementation varies a GREAT deal by the specific housing authority.

@Tal Perry The best way is to get authorized with the mortgage servicer and ask them.

I am an Illinois real estate attorney and I don't have a quick fix/alternative solution.Hindsight is 20/20 but in future, you would do a walk thru after the heavy furniture is moved out of the house.When you say "moving company", does it look like the company might be incorporated in  the state where the house is located or elsewhere.I say this because you may be dealing with an employee at the company who doesn't care or doesn't want his superiors to know what is happening.In Illinois, I can search on the Secretary of State's office to see if the company is incorporated and find the name and address of their authorized Agent and the Company's corporate officers.You really need to contact the President or Attorney/Law Firm and tell them the situation, including the fact that their customers agree that the damage was caused by their company. 

Tell them to call you back once they get their paperwork.2) Fill out the form to get the property added to the local Housing Authority available property list.

@Charlie MooreCall your local Fair Housing Authority.