How to send tenant to debt collector

[Carol Hu]

I have a tenant who owes me 7+ months of rent, I filed the eviction when they were two months behind, but the court gave me a court date of 5 months later. The tenants left the day before the court date, so the eviction was denied. They owe me 20K in rent, damages, and late fees.

I worked out a plan with them over email to waive all the late fees if they came up with a payment plan and stuck to it. We agreed on a plan, then they made their first payment and disappeared afterward. What are my choices here? I tried to send them to the collection, but I cannot even find a collector working on this. The collectors I found said they don't deal with person-to-person collection, and I don't have a registered company.

And I am not sure where they are; they said they moved out of state, and the forward address they left is an out-of-state address.

Pls suggest any collection services; I am ok with paying a big portion of the recovered rent to the collector.