Investment scam

Hi my name is derick i had a bad experience with peer to peer investments run by a lady called lungile nzunza. At first things were ok i got my interests for a couple of months then i invested more money that's when things started to go wrong. I invested 10k in july and i never got anything from it till today, when i contact her someone who says its her daughter claims that the business is closed so how do i go about to get my money back?