I now think Amazon is a ****

I joined Amazon they explained you deposit R100 and you complete to tasks and you can withdraw R180 that worked then I started my next job I had to complete 10 task and every time I had to top up eventually I borrowed R13 000 to complete the 10 tasks so that I could withdraw the money then I was give another task suppose to be a bonus on but I needed to del R13 000 I did not have my instructed told me to borrow the money then I can cash out and get my money so I already owes people money and I wanted to pay them back I borrowed a R7000 she urgedme to deposit it she will borrow me the rest. Which I did then she told me to ask the bank to refund the money cos the merchant said I can cancel it cos the money did nt arrive on time. The bank wants written permission they say the bank must trace the merchants account and call him. The bank says they can't now they just do nt answer I have all the evidence what can I do