I've printed out a Notice to Quit and will post it on their door for legal protection.

.- but the advertising company still gets paid.He has to pay for accounting services, payroll services, tax services, legal services, etc.- they all get paid whether he makes money or not.So, what's your point?

Talk to the management company and if you're not feeling things are right or legal, then take legal action.

Do not rely on it for legal advice.

I am not a tax or legal professional so please take this to someone much more qualified.

And the cost of legal defense , even if successful, will drive the company out of business.   

As you are partnering with your sister, have a legal document drawn up as to what happens if one of you wants to sell and the other doesn't, how expenses will be split along with money you are putting down, borrowing, profits, etc. 

- You've got to go to the property for showing- Many do not show up, so you waste your time- Then you have to have a legally compliant rental application & lease- Some approved applicants disappear the day before or day of lease signing!

This extra road frontage now also qualifies my property to be able to be legally converted into a triplex from a duplex.

I recommend legal advice from an attorney.