false notifications

I'm currently on prepaid, but bought a data bundle for a year, that gets loaded every month. I recently got back from overseas(where I generally take my sim card out the phone), and reinserted the sim. Almost immediately receive an sms stating I don't have an active Internet data bundle. Knowing how expensive data can be out of bundle, I immediately bought another GB to keep me going. Later on, I decide to check my balance, to find that I now possess well over double the data that I had bought. Since that day, everyday, I get daily sms's stating I no longer have an active data bundle. At the moment, I have 1.65GB.<br> This is shocking misinformation, which easily leads to unnecessary purchasing of additional bundles, which aren't cheap to begin with.<br> On top of that, when I DO run low on data, the last few MB's, I often DON'T receive a warning message, which often leads to using data on airtime. In a flash the R50 or R100 airtime balance I have is wiped out due to data use. Please vodacom get these notifications fixed more accurately.