Really annoying sub-leasee....

Hello,

At work (my company owns the building) a leassor and subleasee have started complaining about HVAC issues via text. We're really trying to solve the issue truthfully but it's taking time...

The problem is, the subleasee is real aggressive and rude in texts. Disrespectful and what not. He sends real outlandish messages and disrespecting me and the property manager.

Is it legal or wrong for me to tell the subleasee to cease all communication with us and direct all complaints through his landlord? (The person formally on the lease paperwork with us, the property owner)?

Thank you.