Telkom Mobile flawed

I was trying to transfer airtime on Telkom Mobile and made a mistake with 1 digit, I tried calling the number, but it was off, I then proceeded to call customer services, who told me that there is nothing they can do and suggested I call and ask the person to send it back, now that's quite funny, the consultant, who is employed by them, doesn't know that you can't send back airtime that was sent to you.. Well done on training your staff.. I find it really daft that they have no control over their systems and that they can't even do something as basic as reversing an airtime transfer, seems like quite an elementary flaw. This same thing happened to my fiancé before, they logged a case etc etc and nothing ever came from it.. Honestly, after this incident, I realised how little customer services can do for their customers.