Terrible Service

I called Vodacom upgrades to cancel one of my contracts, which ended last year December. I went from getting 2 Gigs data to 650MB and a whole lot of minutes but for the same Price. Anyway, long story short... after speaking to the consultant who "found me a great deal" I decided to Upgrade. I received an SMS that the quote has been processed and a portion of the 3 Gig data was allocated to the number in question. she then called me on Tuesday informing that the device was out of stock, I told her any device with the same specs will be fine. she was to contact me before end of day Tuesday. that did not happen. Friday 22/5 I call the upgrade contact centre and am advised that the order has been cancelled. Now I don't know what I am expected to pay for going forward by Vodacom, I have no device and partly allocated data. I have been informed of zilch. Can i please have this contract cancelled I can't be paying R300 for 650MB and talk time. and I won't be paying even more for a device I do not have.