10 day demand letter help

[Texastaxi]

This is a question for anyone in law enforcement.

On another thread, I mentioned that we had a contract with a company to rent out our RV. They told us that it was out on a long term rental, and it's been that way for the last two years. They are consistently at least 3 months behind on payment. Right now, they're 5 months behind. Back in March, our contract was up, and we told them that we wanted the RV back, and we were ignored.

We spoke to a LEO friend that said we first needed to send a "10 day demand letter", certified mail, with signature receipt. We did that, and they did sign for the letter. That was on the 18th of August, so we're well past the 10 days. According to the friend, we can now report the RV as stolen, to the Ft. Bend County Sheriff's Office.

Here's where I run into conflict. We have another friend that listed his RV with the same company, and has the same results. He didn't send a letter, but instead called the FBSO and they told him there was nothing they could do as it was a civil matter.

Does the 10 day demand letter change anything for me? Or will I end up having to file a lawsuit against them, to get my trailer back? If the letter does make this a theft, can you direct me to the legal stuff to reference?

Just in case you're wondering, the name of the company is Vakay RV Rentals in Rosenburg. If you're in the market to rent an RV or to get yours rented, stay very far away from these people.