Unable to withdraw money, suspected of fraud

The company is suspected of fraud and cannot withdraw money! I trade XAUUSD on the MT5 platform through Rui Win Capital Ltd. The website is ruiwinaa.com. Contact WhatsApp 1(774)677-7008. They reply that I can withdraw after If I finish promotion. After the promotion is completed, I am required to pay the pledge deposit. At present, my Rui Win Capital Ltd account has been blocked, the customer service has disappeared, and the cost cannot be recovered. Please mediate and investigate, thank you