He may expect to be billedIf it were my tenant I wouldn't do anything silly like claiming they didn't pay rent and threaten them.  

Their response was to demand the money and threaten to deduct it from other Section 8 accounts we have with them if we don't return it.

Give them 72 hours to remove the plants and pass an inspection or threaten to report them to the police if they refuse/fail.

Put portable thermostats in each room and record temputure. you are only required to be within the legal limit. they   can threaten all they want. legal limit and maybe you bump it up a degree. after that tell them to invest in a portable heater.

If you were not aware there was also quite a bit of controversy locally about the stadium because the Crew had an existing stadium and the owner of the crew essentially threatened to leave with the team and go to Austin if they didn't build the new stadium. 

You have grounds because they physically assaulted the other Tenant and their behavior is threatening.

The best way to communicate with a deadbeat tenant is with a Deputy Sheriff's knock on the door delivering process.I'm a professional writer and have a file full of 'threatening' notices which work maybe 10% of the time (and only with law-abiding tenants with something to lose).Creating and sending them is mostly an exercise to amuse myself.

Our insurance carrier threatened to cancel our insurance when they saw a small Pug on the property.

If you threaten their funding they will drop this person immediately.

Needless to say I got roughly 10 emails during the night threatening lawsuits, calling the media, calling me a slumlord etc.