Vodacom are *******

I am so disappointed with Vodacom. I spent so much on airtime on the 4th to gain Vodabucks (R20,R20,R45,R25,R25 using my one bank acc) through my banking app. Then I bought R45 through their Vodacom app on 5th (using my second bank acc) when I didn't receive anything I contacted them. Sent them screen shots of my bank accounts showing all transactions. They told me that because I already bought R45 airtime on the 4th which was loaded they owe me nothing. I proceeded to tell them to check the screenshots properly of both my accounts and they will see the puchase of R45 on the 5th and haven't recieved it. They then tell me not their problem and won't load the R45 on or refund me. This is the worst service ever. Everyone has always told me not to use Vodacom as they ***** and because I never had a problem, I didn't listen. Now they *****ing money I didn't even have to begin with but trusted them. I am so f***ing angry.