Somethings not disclosed to me

On Wednesday last week I took out a new contract with Vodacom for R99 per month that comes with a Nokia Lumia 1320 and R150 airtime. I requested that the agent send me a new sim card since I was using a duo sim and the new phone was using a micro sim, that was not done I had to buy a new sim card and do a sim swap. After activating my contract I was surprised when I was receiving private number and the agent didn't advise me of anything like that. on Surtaday I receive an sms saying I should expect a debit order of R196 to my surprise that not what I I have been advised of. I thought there are no hidden cost now that I have taken the contract too much money is about to be debited on my account, I wonder if CPA will agree with you. Maybe I should send this to ICASA they would understand it better than you do. I want this all fixed, if you cant fix them come and take your phone. I requested that my prepaid number to be converted to contract but it seems like there is too much complications that no one is accountable since when you request for some one who can fix the problem you would be referred to online sales I need answers.