Refund my R150

I am very disappointed at Vodacom, I bought airtime for R150 through their App and hoping to earn Vodabucks and that did not happen but money was taken out of my account. I have been trying to speak with Vodacom and they told me to speak to the bank and the bank tells me to speak to Vodacom, now I am up and down with no help. I need my R150. Vodacom please refund my money.