eft gone through with wrong beneficiary

I needed to buy a gearbox from a company - he sent me the invoice with a company name and account number I did an eft - he is also a client with standard bank. we tried to get our gearbox on Saturday - he did not respond to our calls. I went into greenstone this morning and I was told the beneficiary is a private account and not a company.. if Standard bank new system was running correctly it should have told me that the beneficiary and account number do not match and maybe I would not have not been ****med. I found the Greenstone staff did not want to help me and I was told they cannot fiddle on his account - who is protected by the bank \THE ******** OR THE HONEST PERSON\""