Empty & misleading promises

I spoke to Sisonke on 26/11/18 regarding premature cancellation as I got a better deal elsewhere. She convinced me she can match the deals but i told her i had already signed up to replace one of my lines with another network provider; she convinced me she could at least match the deal for the 2nd line. She promised to get me a Huawei Y3 with R120 airtime and 1gig data for R99.00 p/m but needed to get the deal approved first and will get back to me by 30 Nov to conclude the deal. I called after the deadline and spoke to Boitumelo who said she'll leave a message for Sisonke. I called again today 10 Dec and spoke to Zama who told me Sisonke is not in and a response would've been sent to Sisonke which she don't think could happen as the deal is for R139.00 I can't get it for R99.00. I told her to just leave it because I missed out on a deal elsewhere for my 2nd line because I've been given false hope by Vodacom, What kind of network provider is this? Was this a delaying tactic so that i can miss out on other network deals, and now that those deals are over you are telling me exactly what i can and cannot get? I am sooooooooooooo disappointed its not funny. I've been a loyal contract subscriber for 12 years and this is how you thank me. Now i'm not just going to cancel one line, but 2.