Vodacom

I have been with vodacom for the past few years and I have reached a point where I want to cancel both my contracts with them. My airtime has been disappearing for years even if I have minutes and Data. I was subscribed to multiple services that I don't even know about. I sent the stop all sms but still my airtime disappear due to WASP. Last month I topped up 5 GIG of DATA only to find out it is recurring. I phoned vodacom and they canceled it. Now my bill is R1000.00 more this month and I only got 5 gig of DATA and was charged twice. Can anyone assist me in canceling my contracts as I am tired of being ******. Imagine taking R5.00 from every Vodacom customer that is millions!