not a happy client regarding your response

This is the second time i'm complaining. Mr Sithole from standard bank that has been replying to my complaint now replies that there's nothing that standard bank can do unless I get a subpoena. My question is why do I have to get the subpoena why can't standard bank get it . why couldn't standard bank freeze the third parties account when her salary is in so that she is forced to come into the bank and we can get her to arrange paying the money back that she spent that didn'tbelong to her. I'm a single mother of four and I'm sorry to say this but I have also been banking with standard bank for years but feel standard bank doesn't help their clients enough meaning they dont go that extra mile. I'm furious as R12000 is coming off my salary and the third party gets off free????