I upgraded on 26 Nov after HQ contacted me

I upgraded on 26 Nov after HQ contacted me. Before confirming, I asked three times if stock was available for the iPhone 17 (256GB). The operator assured me it was, in blue and orange, and I chose blue. She confirmed delivery by Monday. To date: No device delivered No confirmation SMS received I called yesterday and was told the Upgrade Department would contact me. No call came, so I phoned again today and was informed only iPhone 17 Pro/Max models are in stock, which I did not choose due to cost. I’ve been a loyal Vodacom customer for years with three contracts, but this experience makes me reconsider continuing. Please advise: Why was I told stock was available? When will my chosen device be delivered? How will Vodacom resolve this promptly?