Vodacom business ********* and not inline with NCR

Took out a new contract with Vodacom forest hill. Set my call limit and data usage. This wasn't effected and went in again to set it. Got a huge bill indicating that I used my data and out of bundle rates app****. Called forest hill, Tebogo who indicated he was aware of him setting the call limit twice with me and he doesn't know why it hasn't' kicked in even though Vodacom assured that this was done on the day it was done on the system. It took more than a week for the regional manager, Solomon to contact me back. When he contacted me he indicated that setting a limit with Vodacom is not assured and that I signed papers in this regard??? Even if I did sign papers (I never received a copy) why does Vodacom still allow customers to believe falsely that they can call and use data as they want and will soft lock their phones when the call limit and data usage has been reached. I'm pretty sure that this is a case for the consumer council and according to the NCR you are only allowed to charge within the agreed amounts. Any business who does not do this is negligible and responsible for all cost overruns.I have read numerous hello peter Vodacom horror stories like this!