Incorrectly loaded airtime can't be reversed by vodacom

I called 135 to assist me as I had erroneously loaded airtime in an incorrect number; and was told that Vodacom is unable to assist me; as it means that they will have to do a reversal from someone's cellnumber.

I told the agent that I have proof an invoice issues by standard bank which has a reference number and could give them a number which the airtime was transferred to; but the agent could still not assist me.

I told her that I even called the number that I incorrectly loaded the airtime into; and he told me that he is in a contract and hasn't received an sms of the loaded airtime; if he did he could transfer it back.

Now kindly assist in reversing this airtime into my call number