Scammed

I made an investment of R1500 to Bi-cryptofx and they said the profit is 21000... Then when it was time to withdraw they wanted a withdrawal fee whereas they said nothing when approaching me, they said nothing about withdrawal fee.. But later on they wanted it before I get the profit... They took my R7000 at first then later on they wanted R1500 for insurance claiming its for cyber loss . So now they want another R2000 claiming that it's a signal fee... Please assist me