Vodacom data bundle run-away fees

I bought a 3G data bundle contract from Vodacom Bayside in 2013 for R199 and received SMS alerts everytime the use of the bundle was close to maximum i.e. 3G. A couple of times I went to the Vodacom shop to buy an extra Gig.<br> In July 2014 I was offered a promotion for R169 for the 3Gig package. During 2015 I had to buy extra data once.<br> <br> In November 2015 I received a SMS from Vodacom stating that my data usage is excessive and up to an amount of R4,600. I queried it and was given a reference no. I stopped using my data line. A week later I phoned to check on progress, just to be told that my account is now over R11,000 and that I must pay at least approximately R5000 else my phones will also be blocked. I made the required payment, but until now NOBODY can tell me what has happened to my data usage and why it exceeded the 3Gig contract.<br> <br> Is someone at Vodacom \*****ing"data or what? """