Spend limit increased with out my knowledge

I bought a phone last year on contact at Telkom branch in Johannesburg CBD, I told the lady that was helping her name is Nozuko that if my1GB data is finish I don't want to spend further, than she said yes she will do that and put it onR 0.01. Today I call Telkom to enquire about my bill and they told that Nozuko from Johannesburg CBD sales consultant put it on unlimited and worse part is when you go to the branch she's very rude and dismissive and cannot help with anything and is always telling me to call Telkom contact center cause she doesn't know anything.. an I want my money for the unlimited Spend she put me on be to reversed back onto my account as I didn't even want it from the start.

Nozuko is a funcken horrible consultant, rude, dismissive and on top of that she doesn't listen to any one.