When was it reported to the landlord?

Even if you have access to the sellers expense report it may not be entirely accurate.

(A web search will reveal many of them.)

Paid benefits, medical, etc.BUT... as I look at this report I am puzzled how you can default on 31K for this and 17K for that or 11K for another, and all of the reports are saying 'writeoff or mumbo jumbo'...  

Each step you take reveals a new horizon.

If you are a principal broker with a brokerage then you should be getting the commission.If you are with a brokerage your broker is responsible for all real estate related activity you are performing however if an agent goes rouge that is not a brokerages fault but the agents for not reporting.

Fire them and report them to the local realtor association.

We would not want to risk losing good tenants and upsetting good neighbors because of the actions of unsupervised children and parents who do not take responsibility.If I were in your situation, I would verify the report.

Each step you take reveals a new horizon.

There was no control, oversight or reporting.