Vodacom

I signed a contract with Vodacom. It took 3 weeks for my phone to arrive, after having to contact Hello Peter to actually get some response from Vodacom about the device. Finally, today I got a call to come and collect my phone. I signed the final contract this morning and on the cover is written the requested top up data bundle will cost me an extra R129pm for a gig of data. While I was in the store I asked if this would see the end of all the problems I've had with Vodacom. I was promised the service would be good from now on. Not 20 mins later I got a call from Charlee telling me that she had made a mistake on the contract and instead of R129, the data bundle would instead be R149pm. Ordinarily this wouldn't bother me as the difference is small but it was the last straw considering what I'd been through up to this point. I went back to the shop and told her that it was her mistake and that I would only pay R129pm. She was very rude and told me that it would cost R149pm whether I liked it or not. Eventually the store manager, Vanessa Was called to sort the issue. She said the problem was not ours and agreed we should only pay R129pm. Remind me why I changed to Vodacom again?