15 days to reverse money paid erroneously

I incorrectly paid R500 via EFT, into my Vodacom account instead of my Telkom account. I immediately called Vodacom to make them aware of this. I was told to email proof of payment, which I did. Four days later I received an SMS asking me to send proof of payment via fax, (10/03/2015) which I did. A week later still nothing when I called in was told there was no record of this reversal on the system, I would have to wait 7 - 14 days longer before the reversal was done. Is this not ridiculous but worse still is the nonchalance which which things are handled at Vodacom the attitude is one of suck it up, shut up, this is how we operate, the disdain with which we are treated as customers is totally unacceptable.