BIS and SMS's not deactivated for 24 months

In 2016 around June I did an upgrade from a BB phone to a Samsung S7 and I remember asking that the BIS service to be deactivated which wasn't. I just called now spoke to Lerato Mabesa who promised to have the service deactivated as well as the SMS bundles. Also, I changed addresses and I have been asking myself "why am I not receiving my Vodacom statements via post", clearly the address wasn't changed to the current one I use. I feel like Vodacom has *****ed me here. For almost 24months I have been charged for the BIS service I'm not using, SMS's I hardly ever send and because of this you guys decided not to send me statements because I would see what I'm being charged for. I would like to be refunded for the amount of the BIS service I have paid which I didn't use as well as the SMS bundles.