Charged twice for bundle

Today I tried to purchase a 1GB data bundle. The purchase process completed but I didn't receive a confirmation. I repeated the process again after waiting about ten minutes and assuming it had failed somehow. After completing the purchase for the second time I yet again received no confirmation. Because my data had run out I went to the Vodacom store I'm Constantia. I asked for assistance from the staff only to be informed, apathetically, that they couldn't do anything to help. Then, at 6pm this evening, I get confirmation that I had purchased TWO bundles. Unbelievable. Vodacom, please refund one of the bundles, refund any out of bundle costs I accrued today and finally tell your Constantia store staff to buck up and start at least acting like they care.