Can't log in to the official website. The salesperson disappeared. Failed to withdraw money many times. Finally the account is banned.

In mid-August, I made a deposit of 1850 US dollars, and the trading operation took about 20 days, and the Fx trading Chart was 2189 US dollars. On September 8, the backstage official website could not be logged in, and the salesperson disappeared.My withdrawal request was rejected the first two times. For the third time, the trading account was directly frozen. Is this exchange running away or can't afford the profit of 339 US dollars?