Unfare practice by Standard bank

Good day I am Jerome David Stevens(ref.no.***) ID. ***. I'm residing in Carletonville I opened a ***** case on the 1 of October that's been dismissed by the bank on lack of evidence..but here is what happend that day I'm working for Mponeng mine as a winding engine driver underground and on the 1 October I was working afternoon shift from 1-9 that night I asked my wife to withdraw money that day but the moblie ATM by our P&P asked for my ID.number when she inserted the card and when she wanted to return the card the ATM swallowed the card she tried to call the helpline number that was on the ATM and lines keep cutting off then she called me at work and explain the story. I thought ok I can just go make another card the next day cause my card has been swallowed by bank in the past. That night when I came out from underground after 21h00 then i saw alot of activity on my card people been using the card to by buy and withdraw money I called Standard bank ***** line and ask to block the card cause there was still just over R4000 in the account but the morning of the 2 October they managed to take that R4000 out of my account ..now the bank just dismiss my case and say its impossible for people to withdraw and buy with my card without the pin ..and my wife never even have the chance to put in my pin for anyone to see the pin ..how can they justify when after I block the card they still managed to withdraw money from my account after they said its impossible to do that and its alo impossible to withdraw money without my pin ..pls help me to understand cause this is my case this is what happened I'm suppose to feel safe having my money in the bank but im not and I believe I'm not the first personality the similar complaint and how can they just dismiss the case without proper investigation I'm supposed to be insured against things like this. And I did call within 24 hours according to standard protocol. I hope you can help me to get to the bottom of this ..God bless