Credit Card Fraud Prosecution

We have a site called FreeSiteSignup where we give our customers their own site, so they can make some money online. Lately, we have been seeing a lot of fraudulent transactions from a guy in Vietnam, and we would like to take legal action. We want to hire someone to be our representative (if possible, this person should live in Vietnam and have the knowledge about Vietnam's laws) and to follow up with the whole process and to keep us updated. Basically, begin a legal process against the criminal and provide proof of this We will provide you with the necessary information about this criminal.