Worst experience of my life trying to get anything out of the Call centers

I ordered my upgrade online (S7 edge) and when I didn't hear anything from the online team after 2 days I phoned the call center. The consultant advised that Samsung discontinued the Edge and I will in fact not get the upgrade. This was the first concern - having received a confirmation of my order when the product was no longer for sale. Subsequent to this experience, I checked my 'bill so far' on the Vodacom mobile app and discovered that they added R1300's worth of charges to next month's anticipated bill, including 'promotional' offers that I didn't request nor authorized. I spoke to numerous consultants and never received feedback, holding on for 30mins at times only to be cut off (or dropped) as soon as I eventually got through. Radwell was one of the consultants who promised to phone me back , but I ended up phoning to follow up as he didn't contact me as promised. I was also provided with a Manager's email address (Jeremy Meyers), whom I mailed twice and to this day my email hasn't been acknowledged and I still have no resolution. In my last attempt I phoned the call center and asked to speak to a/the Manager, and was told I'd be transferred - but 2 seconds later the call was dropped. Thank God I cancelled my contract as I'm definitely moving to another provider as a result of the shocking lack of service from the various divisions and agents I had interactions with (I was transferred from pillar to post almost every time I phoned).