Being unfair and Supporting the bank's side

It looks like you have ignore the fact that after the first transaction on the 2013/02/13 I called the Bank to stop my Card and i was informed that I don't need to worry they will stop it and also reverse the R3900 back in my account. The second transaction was done on the 2013/03/9 of R15095 after I reported to the bank I feel that it was the bank's fault as it was reported already and 15/02/2013 the Bank did reverse my money but later in May they take money from me telling that the merchant refuse to give them the back money so they can only get it from me because I am the weak one. The other bank representative even told me that After I reported first time the bank representative was suppose to cancel the card completely but that wasn't done which is bank's fault, because their support the bank their didn't see the relevant plus they was no funds in /on my card I could not use it but they could give someone else my money which not even there. How does this works? In terms of the MasterCard/Visa rules if the card reported compromised/****** it must be cancelled isn't? that's why I am saying maybe the first transaction which the bank look already from me seven times