VALR app / yellow Dex pay ..

Hi my name is Basetsana. I got a app on play store ..I downloaded it and the is some lady from Facebook saying she can help me trade on my own ..I deposited R1500 in VALR app .. after that lady said I must deposit that cash to some app call yellow Dex pay ..and I sew my money growing .when I need to withdraw the money ..I was told to deposit R6500 I WILL GET MY WITHDRAW PIN .NOW MY MONEY IS GONE LIKE THAT ..