Pills dont produce results - no refund as promised

I replied to a FB post and Jared called me and convinced me to buy his Slender Me products for R580.00 that would help me to lose around 3kg per week without exercise or dieting. He even promsed a two week I am desperate to lose weight so i transfered the money and got my pills a couple days later. I tried the pills for 3 weeks and weighed myself each week and lost no weight at all. i contacted Jared but recieved no feedback. i then asked for my refund and got the run around and no real feedback as yet. I feel they are selling an untested product and making promised that they cannot deliver on and not keepting their promise of a refund policy.