Misuse of my credit card

I recieved a bad service from standard bank as my card was misused and i did blocked it same time and i even sent the email to ***** departments copying them from the email i received from takealot that they must file a dispute and send it to them but the bank just phoned me today telling me they are not gonna refund me the money worse they did not even bother to contact takealot and stop the purchase after i sent them the emails and now they telling me the case is closed which is not fair because i did trace and find out where the purchase was done and they saying because i confirmed the otp number they will not help me mind u i was sleeping that time they phoned me those ********* claiming they are from standard bank card devision