Vodacom breaks promises

So frustrated. I got a better deal through Telkom mobile for my voice contract, and then called Vodacom to cancel my contract with them. They offered a price match with the phone I wanted (Mate 20 Pro), and said it would be delivered by 10 December as they had a black one in hand.

I accepted this as I do not want to be without a contract as I work from my phone, spending R1500 per month on my contract currently.

When I called today to check where my phone is as it was late, with no feedback from Vodacom, I was told emphatically that the consultants I had spoken to initially had **** about having the phone in stock, and that there was no stock, and that it would only be arriving beginning of Jan to be couriered. Also, my contract would only be starting when I got my new phone. I feel baited.