What steps should I take if I've been targeted by an LTR visa scam in Thailand?

Hello. My husband and I are currently on the LTR (long term residency) visa. We received an email from what we thought was the LTR Visa Unit, stating that they are conducting post monitoring procedures to ensure that we have maintained our qualifications, and that we need to submit our documents. It seemed very legit. Until we found out it was not. Shortly after submitting our documents we received an email from the actual LTR folks warning us of scammers using fake LTR accounts. Unfortunately, the email address ended in '.com' instead of 'go.th.' We have already contacted the LTR unit. They said they will speak to their legal team but I don't know what they can do. We have done as much as we can to protect ourselves, i.e. froze all credit reports, added extra security to our financial accounts, etc. What else can be done?? Any advice would be appreciated.