This broker is a scammer, must be stopped

At first they contacted me in LinkedIn and then in WhatsApp
this broker is a scammer, they blocked my withdrawal, saying my account is suspicious of money laundering, and if I don’t deposit double of assets blocked, they will liquidate my funds and report my account for money laundering, they has created this platform for scamming people, as you see in real time price of XAUUSD in legal platform and in their platform, they are a fraudulent and are laundering money, how can be stopped this platform
you can’t withdraw from their platform, they let you withdraw only some little amount but when you try a bigger amount they froze your account, and they change addresses every time you deposit there
also they have changed their website several times last time in https://tradingpointuk.com