Tenants No Longer Responding and haven't paid pet fee or partial security deposit

[Gloria A.]

Hi all, 

Perhaps you can help me with some next steps.

I recently signed a lease agreement with a couple who have stopped responding to my texts, emails, and phone calls. This is the second month they've rented my property and they were late on the January payment. I contacted them the day after it was due and the husband assured me he would pay. They sent a payment that failed and after I reached out again still did not make a payment. They had several excuses for why they had to pay late, and would not communicate proactively with me in this time. After 5 days past the due date I made them aware eviction proceedings would begin if I were not paid ASAP. Finally, he paid me, but not before sending this message:

"I don't know any different way to explain, that with the 3 days off over the holidays that I wasn't paid for, and the fact we were blindsided by the car insurance put us short. Maybe I need more crayons to explain it to you. Or maybe money is more important to you than having a good landlord tenant relationship. But I can tell you this...I get paid today, and you will have your precious money"

I agreed to let them pay their security deposit (2 months rent) and pet fee in installments; they paid the first half with their first payment and were to pay the remainder in 1/3 over three months. Now I was told by the husband he would pay this portion last Friday, and I still have not gotten a payment or response for more than 5 days now. What should I do at this point?