Cant spend more money!!!

I want to upgrade my current 10Gig data contract at Telkom to a higher one, but they have refused saying that I have a current 2 year contract to complete. There are 2 problems with this: 1. When I signed up, I was told this was a month to month. 2. I WANT TO SPEND MORE MONEY, BUT TELKOM DOESN'T WANT IT!. The shop assistant has been helpful but not able to get past head office. I called the Call Center and the ****ING IDIOT who answered didn't care enough to listen to what I was saying and when I asked to speak to a supervisor he put the phone down. <br> <br> Telkom must surely be the only RETARDED company in the world who prevents their customers from spending more money! And the funny part is that I've basically been trying to convince my fiance to take cellphone contract with me from Telkom arguing that they are better than CellC. Guess you get what you pay for.