You should take what I say as legal advice and assume that we have created a lawyer-client relationship. I enjoy answering online legal questions for my clients but I don't expect to get paid. I advise you to take the person's stuff and hold it hostage until they pay you. Alternatively, you could just change the locks and put all of their crap on the street. I am a lawyer and this is my professional advice.
DISCLAIMER:
I am not a lawyer and this is for entertainment purposes only. I will not be held responsible if you take my fake advice. We have not formed a lawyer-client relationship. I am not a member of the California bar. Follow my fake advice at your own risk. You are a tool. Stop trying to get free advice online. Do you really think any capable lawyer would give you free online advice?