Buyers Agents Tresspassing/Disturbing Tenants

[Clark Kirkpatrick]

I'm currently working to sell a fully rented quad, and I had an agent make an appointment for a showing today. The seller had to be there to access the occupied apartments, and he was available at 1 pm.

The buyer's agent wanted to see it at noon, and I let him know this wasn't possible. He agreed to come at 1 instead. I have evidence of this in text messages.

When that agent didn't show up at 1, I learned that he had come at 12 after all, somehow got into the property, and was banging on tenants' doors to get access to their apartments. The tenants were quite upset about this, as was the seller.

Is there anything I can do about this, either this time or in the future? How do I enforce appointment times and prevent tenants getting harassed?