Can I be evicted without notice or process for late rent in rhode island?

I fell behind on rent 12 months ago and went to court. I made an agreement and settled the rent in the same month. Since then I have been current. This month I have had some isues and fell behind again I should be able to make full payment of this and the coming month by mid sep. However my landlord says that he can evict us without going to court or giving us notice before I can pay and I do not have the right to settle again. Basicly I have no time or right to process. He said he can chainge the locks any time he wants and has entered my appt without us home. He also placed a lock on our storage area today. What can I do? And what are my rights?