I lost over 20,000$ dollars Vantage FX is scam

VantageFx without prior notice my fully hedged positions on my account.Firstly and than repeatedly support denied any interference VantageFx in my trades in my account and make accusations that I am responsible for such closing of the trades or hacker interference and I should change password and so on.After many complaints and persistence from my side finally after one month so called investigation admit that VantageFx was the one closing