Appreciate your greeting, but I would even more appreciate that you resolve your conflict with John in a way that does not involve me. As I heard, you have caused damages to my property, meaning you cause me losses. It would be better for all including yourself, to settle this without any further damage. If you stop this now, I will not take further action. Anyway, I have sent John an eviction notice, meaning he is no longer the legal lessee of the place. Should you enter my unit, you are trespassing.
Anyway, there is a reason for everything. If John has done you wrong and you want to explain to me what is going on, I can meet you next week on the condition that you have not entered the building