Legal Question in Business Law in California

It's not complex. If criminal conduct, file charges with the police. You can also sue. Either way, you'd need evidence to succeed. As with anyone seeking to sue, the general rule is: you sue IF the case has merit [likelihood of winning and the other side found liable], value [substantial provable damages and financial losses] and collectability [defendant with sufficient insurance coverage or available assets to collect against]. If serious about doing so, feel free to contact me about getting counsel.