Legal Question in Securities Law in California

First, let me point out that "securities law" has to do with stocks and bonds, not securing someone's personal belongings in a storage locker. You might get more responses, and maybe better ones, if you re-post under a topic heading having to do with crimes or torts. However, perhaps I can be of some help. What has happened here is probably best classified as the tort of "conversion." Conversion is any act of dominion wrongfully asserted over another person's personal property. There must be an actual interference with one's ownership or right of possession. The remedies for conversion may include money damages and specific recovery of the converted property. This might be a suitable matter for small claims court, which is simple and cheap, and I'd suggest you start by getting a paperback self-help law book on California small-claims procedures; try Nolo Press on line or at a local bookstore.