Vodacom data glitch not resolved. one GIG disappears within 30 minutes without usage or background updates..

Vodacom. I purchased 1GIG for R19 on your J4Y deals around 9.10 this morning. The amount was loaded. (By the way: I had R40 airtime available and after a R19 purchase my airtime was R19.03. The maths don't work. Do you charge for the service as well? A few minutes later my airtime was suddenly R19.52. Still not R40 - R19 = R21. Where does the rest go?) I read two whatsapps with my newly bought 1GIG and then made some coffee . When I turned my laptop on 09.50 there was nothing left. 1GIG of data gone without any usage. So I had to buy 100MB of power bundle for R15 to enable me to buy another 1GIG for R19. The data usage seems normal now. Only a few MB gone after working on the laptop and phone for 20 minutes. This has been an ongoing issue the past week. I buy 1GIG, it disappears, I buy another GIG immediately after and it works perfectly with normal data usage. Your customer care team members suggested I take out my simcard every time I am not using the internet (is this really an official recommendation?) I was also advised to turn off all automatic updates on my phone and laptop. I have done that. I confirm: Since yesterday all automatic updates have been turned off. I am asked for permission for every single thing my phone or laptop wants to do. Where did my one GIG go between 09.10 and 09.50? This is an ongoing issue. I did an online search and results showed that there definately was a glitch in Vodacoms data services. You have a glitch in your 1GIG R19 a day service and I am getting tired of it. I am going to post until it is resolved and I am going to begin to approach other media as well. Please resolve this issue asap and please replace my lost 1GIG of this morning.