Refund Money

I received a call from Vodacom as a regular customer to extend my contract with them and increase my data for the same amount. As it was a good deal, I decided to extend my contract for the same amount. At the end of the month I checked my bank statement and noticed that Vodacom has now taken more more from my account as what the agreement was. I contacted them and they told that it was a dealer of them called Elite Mobile who took R150.00 as an upgrade fee and R159.00. I phoned Elite mobile who told me it was a value added services fee I subscribed to, rescue box and life cover. Why would I take out life cover for data???? I did not agree to any of these VAS. In the meantime Vodacom has realized they made a mistake and credit my account, but Elite mobile refused to refund me my money. I had no dealings with Elite mobile before and on the day I received a call from Vodacom. Please assist me.