Russian freelancer required who can investigate fake reviews of Russian e currency exchange and Forex sites

We run https://www.okchanger.com/ and https://www.forexpeacearmy.com/. Our websites publish user reviews of e-currency exchange sites and forex sites. The e currency exchange sites are mostly Russian and are used by many Russian users. Lots of fake reviews are being posted in our sites in Russian. You have to investigate those reviews so that we can take action against fraudulent sites.