My complaints are being ignored, please refund my money Vodacom

I initially bought travel bundles for R99 for 1GB which worked well the first time around. I then ran out and this time around I bought data travel bundles for R199 for 1GB data bundle + 100 min and smses. This was because I want to make calls and send sms even though I was abroad. To my surprise, only the data bundles worked...and I could not make any calls or send any smses. This R199 package worked the same wah as the R99 package, which meant I lost R100 for a service that did not work. I want my refund for the 100 minutes and the smses because that services made me pay an additional R100 which still did not function. Please explain why I paid the extra R100?