BIS CANCELLED WHILST STILL IN CONTRACT

I signed a 24 month Top up 99 Contract with Vodacom on the 30th of March 2013. Seems Vodacom neglected to take note of this when cancelling my BIS subscription 2 weeks premature (15.03.15). On the afternoon of the 16th of March 2015, I realized I was charged R60 to surf the web and my airtime was depleted. I also then realized that none of my Whatsapp messages has been going through and no one could contact me.During this time I thought the problem was with my connectivity. I rebooted non-stop and kept checking my wifi settings. Finally I decided to phone Vodacom on the 18 March 2015. I was told my BIS have been suspended (EVEN THOUGH I WAS STILL IN CONTRACT!!). Basically (limited by word count), on my 4th call to Vodacom, in 6 days, no one has even LOOKED AT my query. I am being debited again in 2 days and receiving this service?? Will also be cancelling my pending upgrade.