Airtime has disappeared, and when I enquired I am told the that they cannot reverse my money - Consumer Complaint for Vodacom - Head Office

I purchased R50.00 airtime on vodacom. With my airtime I bought R12.00 to use for to any network but only to realise that vodacom has taken R38.00. Upon calling vodacom customer care I was told I selected over and above my request for R12.00 airtime I purchased the data bundles to use for whatsappp which I never did. I was told vodacom cannot reverse that and I must just loose my R38.00 for things that bI did not request for. I would like my money too be reversed as this is not what I rtequested.