Tough question. The DOJ won't be interested unless there are salacious details and/or tons of money lost. Of course their lawsuits and/or regulatory actions are dictated in some way by the hot topic of the month, the administration, etc. Don't take it personally that they did not respond because they will eventually send you a letter of some sort. You can try to contact you State Attorney General to see if they would be interested in pursuing it. Also your state will have a securities board that you can contact and they may or may not be able to (or willing to) help you get the authorities interested to pursue criminal charges.
Fraud is both a civil and criminal concept.
Fraud is actionable if certain elements of proof are established by the evidence. Using the written documentation you have is a good place to begin. Contact a local lawyer - many may give you a free consultation for an hour - to discuss your specifics. Far too many variables exist in the short post you wrote for any further observation by me.
Good luck to you.
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