cellphone transfer recall

I did a cellphone transfer of 500 to my sister's standard bank account on 02.02.2015 only to find out few days later that the account has been given to another standard bank customer because she did not use the account for few months. I phoned standard bank to request for a recall of my money on the 11.02.2015 and i was told it will take 10 days for me to get the money if the person who received the money does not have a problem with giving it back. I was supposed to get the money of the 25.02.2015 but i did not. I went to the K90 branch on 27.02.2015 to ask about the progress of my query and the lady said she sent the email to the person who is dealing with my query and she said she will call me back but one week later i did not get anything. I called standard bank again today 06.03.2015 and the guy told me the query was supposed to be re-logged by the person who helped me the first time and it was not. My query reference number is: ***