Added Unlimited Calls Package Without my Concern

I am so disappointed with Telkom Mobile, if I could I would cancel my contract with them.<br> <br> Last year December I was contacted by their sales agent offering me a contract for R179 per month, it included a Tablet and a Cell phone, it sounded like a great deal and I accepted the phones.<br> <br> This year in January my bill was R908, I was very shocked and I called the call centre in order to understand why my bill was so high?<br> I was told that my contract had a spending limit of up to R500.<br> <br> I explained that I can only afford to pay R179, and that is why I took the contract in the first place. <br> <br> The agent told me that the least spending limit it ca be is R10, she said the is no way it can be R0 she also said it will be effective from the 1st of March, she said it is how their system works.<br> <br> I made it clear that she should schedule my contract to be R189 per month and nothing more.<br> <br> On the 1st of March I did call to confirm that my request was done. It was confirmed. Two weeks later I called to check if everything was in order, it was confirmed again.<br> <br> Friday I got a shock when I was told that my bill for May is R403, because I have unlimited call Package, who authorised that?