Severe Slippage

I've lost around 90℅ of my money with this broker because they took it from me , our leader (attached her profile and contact number)sent us a signal called DNNC as her mentor who worked inside told her alrhough was not exist in any platform only in MTFE, once we trade the signal after a minute maybe we got a servere slippage and this is not the first time we had the same problem before and they announced that they have mistaken but now they did it on purpose cause its not logical how the chart went down so quickly not like any other cryptocurrency. During that time I've searched everywhere to find a way to expose them or to contact anyone for help so i didn't have anyone to contact with cause WhatsApp we got zero response but when I heard about you guys I thought that I have a chance to get my money back from them , and we had a team on a WhatsApp group everyone lost their money in less than a minute, that's not acceptable and wrong,, so please help me get back what I've lost.
Thanks. Around 950USD