I was also scammed by Forex Cryptotraders. They use Facebook to advertise their trading. I was to told to deposit R500 and I will receive R5000. I did

I was also scammed by Forex Cryptotraders. They use Facebook to advertise their trading. I was to told to deposit R500 and I will receive R5000 in three days. Same day after I deposit it reflects R3000. After three days I change to R150 0000. They told me I was one of the Lucky winners. They told me to deposit R3000 inorder to receive my 150K. I said to them the reason I invested R500 just because I don't have money. They keep on saying Mem and I am he. Please help to catch them.