Dear tenant, You must have a name - use it.
It is with the greatest regret that we notify [delete this and go straight to the point] Your rent is now three months overdue, despite several reminders and promises to pay on your part. This is our second letter of demand and will be the final one. The Landlord–Tenant agreement is a binding contract and you have failed to keep your end of the obligation, which is to pay the rent on time.
Please pay the outstanding amount of [xxxx dollars] immediately. for we now have the legality to lock up your unit upon sending this letter. We’d also like to let you know that you currently have no rights to your inventory inside the unit – it is legally ours until you pay the outstanding amount of [xxxx dollars]. Should you decide to take your inventory out and take off without our knowledge, it will be considered as criminal offense, in which case you will be pursued and charged.
You have a problem here - if you tell him you are proposing to lock the unit, he will certainly remove his stock. Threats to take him to court will carry no weight. If you have a clear legal right to lock him out, then do so at once (change the locks if possible). Put in your letter:
"Unless this sum is in our hands within 24 hours, we shall take legal action."
In the meantime, consult your lawyers about your actions.
Student or Learner