Reversal of transaction

Money was supposedly transferred to my account. However, I had noticed that the account number was incorrect when I had received the payment confirmation via SMS. I immediately contacted the helpline - ***to inform them. I was told to ask the sender to reverse the transaction which would cost R160.00. The sender then app**** for the reversal of the transaction and was told that it would take 10 days to process. I have just received confirmation that the reversal is not possible.<br> <br> Kindly assist,<br> Mr. Steyn