Standard Bank Master Card Chargeback，complaint.w

I recently did CFD trading on the internet， and invested 250 US Dollars， in a broker called Starkmarkets.com. (They advertised under Bitcoin Revolution，as a catch phrase)! Did the overseas money transfer， from my Standard Bank， Mastercard. I soon realised that I have been ****med by this broker， and tried to withdraw my funds, which they， refused! Logged complaint with SB ***** division， who reconned that transaction was legit， as an account was opened， on my behalf! All evidence was submitted via email， to prove that I was in fact de*****ed， of my funds! The broker called me at first and invested my funds in Crypto currency， on my behalf. They however never provided me with investment wallet details， so withdrawing the funds， was impossible from my， side! They kept responding to my email enquiries， that funds will be paid back in 7 business days， which never， happened. Fact is that SB Master Card Division will not honour their own Chargeback *****， Policy. So be weary in future who you pay online， with your Mastercard! You may very well lose all your hard earned money through *****， and your bank could decide on behalf， of the **********!