Paying for something that you don't get

Good Morning. <br> I have struggled almost a month now with Telkom my internet service provider. I'm paying for a 10gig internet data bundle since April 2014. During December 2015 I keep getting a message that my data is used up. I phoned the Internet division only to be told but I'm only on a1 gig bundle. They refused to check my account and referred me to sales to sort it out. Sales laughed and said but I am suppose to be on 10 gig, but they can't communicate with the internet people and I must just give them the reference no. So I phoned again to the internet division. Still no satisfaction as they still refused to change my account to 10gig. After various phone calls to different divisions, I went to the Kenilworth branch. Here I also was told they can't phone them, but logged a email complaint. Since then another complaint have been logged again as it still has not been sorted. On my question what about the money I've been paying for something I haven't been getting, I was told to lodge a complaint to the billings department. No Manager or Supervisor is ever available to talk to and nobody is taking responsibility to give me what I am paying for.