Poor service

Hello Peter. Please assist me in getting my money from standard Bank. I deposited R2890 into someone else's account by mistake. I contacted the bank for assistance and they are informing me that they unable to get hold of client. I feel that they they are not doing enough to help me. The bank have means if they wanted to to get hold of him by at least freeze the account to draw his attention. I had this account since 1998 and I know it by heart there was no way to put correct digits. This account starts with *** mine *** so their system put a 0 in front to change the account. I was preoccupied with notes rejected missing the correct account holder. Please assist me as the bank is not doing anything except hiding by saying they can't debit his account and refund me. I have proof that I deposited money into his account but they would not freeze just this amount. I feel it's concerned about one client. Even if it might be their policy buts it's unfair and biased