They will not refund me

I invested R1000. A day later I was told I had made a profit of R50 000. Then I was demanded R5000 to release my profit. After a lot of convincing, I paid it. When I was expecting my payment, I was told I needed to pay R4500 to change my payment from international currency to a South African rand. I have been waiting for the payment now I am told have to pay R3000. At this point I have requested that they refund me my R10500.