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We can't recover our lost funds from scammers, they have gone and never give back your money that is what I understand. Sorry, but any services pertaining to helping recover their funds can't be trusted because there is no way to get them, honestly.
Well, the best thing to do in order to avoid scams is to stay from them, ignoring their services, and the last option is to use reliable sites. The scammer will really have to find their way in so we need to be cautious especially when it talks about money offerings.