Migration

I have been wanting to migrate to a HIGHER data package .... numerous calls, where I phone the provided nr, to be told 'no, we are not the correct department' - yet another number. Yesterday I eventually find someone to assist me .... however after explaining what I want (a quotation at this stage) four times, he tells me the cost of the bigger data package, and then says but your hand set was on a special, thus that will also increase when you migrate. Are you kidding me? The handset will increase monthly nearly x4! So I said thanks, but no thanks I now get a call FROM the call centre asking whether I was assisted. She then puts me on hold nearly 4 minutes (after phoning me!) to check the thing I was unhappy with yesterday. I want a total cost for the package SHOULD I decide to migrate. After eventually giving me the cost & a completely different story than the guys from yesterday re my handset, she says can I go ahead and now migrate you. I said NO, please send me a written quote / something confirming the cost monthly. Uhm no, they don't send anything in writing! So you want me to accept a quote from someone who was very unsure about herself, and giving me what I was hoping for, but completely different to yesterday's conversation? BAD service, I am trying to give Vodacom more money a month, but they cannot send me something in writing confirming what I will be paying?