30 days to Refund R300?

I went to Woodmead capitec ATM which rejected my card twice when I tried to withdraw. I then decided to try an external ATM as I urgently needed funds. The also cancelled my transaction after I entered the pin and chose an amount. However capitec sent me an sms saying I withdrew the R300 and my balance depleted by R300 However I never received the money. I stood by the ATM machine and phoned Capitec 24 hour call center. They kept me on hold for couple of minutes only to come and tell me that I would wait 24hrs to 30 days for “investigations”. I then asked how it can take 30 days to investigate that I never received R300 when I have the receipt in my hand that clearly states “transaction cancelled”? Other banks reverse the money immediately if the ATM does not release funds. Why in the world should I have to wait 30 days? I’m so disappointed in Capitec. No regard for efficiency to loyal customers at all. I want my R300 back ASAP please! I was asked to if I wanted a reference number for the inquiry. I said yes send it to my cell phone number. a day later I am still waiting for the sms. This is really pathetic.