Is Luxtious a scam, or is it legit?

Someone from Luxtious convinced me to open 2 accounts. A first of 400 euros then another of 3000 euros. When they thought that I was not going to invest more, they blocked my account of 3000 euros. I can no longer close a trade or make a withdrawal. The brokers who have been calling me every day no longer call me. I no longer have any way of making contact with them. This is more than a great lack of respect, it is downright theft. They have blocked my access to closing a trade so that I cannot make a withdrawal of funds. I can no longer have contact with Luxtious. I hope that someone can explain to me how I can force them to respond to me to settle my account, before taking legal action.