Is Excalibur safe?

Exposure platform: Excalibur Product:Future,Future option and stock Teacher:Brother Bin,Zhang Peng,Zhou Shida and Zhang Weiqiang Instruction Method:Through group,one to one and live-broadcasting room instruction Group:Elite B8 My surname is Lei.I am a full-time mother.In this October 5th,when surfing the Weibo and Wechat,I was pulled into a group,form which I was to exit.It was a stock group.At about 6:00 PM.The group assistant sent a link,saying that it was the link of teacher’s live-broadcasting room.I entered it, in which teacher Brother Bin taught lessons on stock,which was accurate.I made profits at the first several days.7 days later,he recommended us Excalibur ,saying that the stock market is not optimistic,and pulled a account manager into the group.Someone who open the account in it sent the profit screenshots in the group.I also opened an account and deposited 300000 RMB,profiting more than 20000 RMB.With his advice,I added 200000 RMB.Unexpectedly,my account became forced liquidation.He kept asking me to add fund,ensuring that he could take us to recover the losses.I wanted to make a withdrawal,while he claimed that the merest amount was 200000 RMB.I argued but he didn’t replay to me.