Incorrect payment

My friend has done an internet payment to the incorrect person. She has paid the amount of R20000 into an old account (she paid this company about 6 years ago) which is still on her internet profile. The beneficiary she paid has their account at Standard Bank.<br> She has contacted nedbank but they say they cannot help her and then contacted Standard Bank for a contact number of the beneficiary but they say they cannot give out that information.<br> now what?????