If that's true, then I think you need to follow up with the authorities, i.e., by sending your website to the California state Department of Justice, which has the authority to investigate these matters, or else to the consumer protection agency.
Unfortunately, there have been a great many scams like this in the past 4 years and this guy may have just slipped through the cracks as a result of staff cutbacks.
The authorities will likely be grateful to you for any assistance you can provide them, i.e., by helping them locate other victims.
Do you think authorities at the state level would be more receptive than at the county level?
Because I've been trying at the county and city level and after sending many victims to ring up the investigators, little has come out of it.
I always thought at the state level my chances are even bleaker of getting their attention.
1. Guaranteed? Man already has multiple suits and judgements against him in civil court in past few years in addition to having servdd time years ago for a similar crime. He even has a warrant out in another state AFAIK. No criminal charges in NY(where I am based) or California(where he and many of his victims are).
2. It's very hard collecting money from him even after you win the judgement, from my conversations with those who have. In the end, I risk taking an even bigger hit especially if he countersues(even the odd lawyer willing to work on contingency warns me that he will almost certainly countersue for which I will need to pay out of pocket)
My best option in light of these realizations was to build this site which seems to have at least made a dent in his ability to scam. For example, the guy has been playing with the spelling of his name, at least partially I'm guessing so my site does not pull up when his next victim googles.