Double charging when roaming

I recently bought an All For You roaming package that included 1GB data and 100 voice minutes. At first it appeared to be working properly but after the first day I am being billed directly for my use. The calls I made haven’t come off my allocated minutes. So I’m addition to the R199 I paid for the all for you package, I have been billed over R150 for roaming while I haven’t even got close to finishing the allocated minutes and data and I’m still well within the 7 days since I purchased it. I demand that this be corrected. Reverse the charges that have been incorrectly billed and deduct it from my allocated minutes instead. Absolutely pathetic service. This is the last thing I need to be worried about when travelling but it seems Vodacom never misses an opportunity to ***** over their customers