Sturgle to pay back money

On the 22 June I made a double payment to Old Mutual Finance. When I realised the double payment I went to the N1 City branch and Biance Viljoen helped me. She told me that it would take 2 - 3 days to reverse the money. After a week I went back and then they ask me for other details and that they cannot reverse the money into my account but back to my son`s account. My son went to the Bellville branch and told Togieda the story and gave her his new account number. On the 13th of July my son went back to the Bellville branch and Togieda told my son that the money would be payed into his account that same day. On the 14th July I spoke to Bradley. After about 15 min. Bradley came back to me and told me that Head Office, at that stage, did not rectify the account number. I tried to get hold of Mr Steward the CEO but he was on leave. I cannot understand<br> why they take so long just to reverse the money to my, or my son`s account after almost a month. I am really disappointed in Old Mutual Finance. They are quickly to charge interest on a outstanding account, but when they have to pay back money, it is a struggle.