very disappointing

I'm very angry and disappointed at the same time. I have been with vodacom for the past 6 years on the 07 Dec 2019 i wanted to cancel the contract that i had with them. After receiving a bad customer service from a guy by the name of nazeem if i remember correctly. at the cancellation department (online) i spoke to a guy by the name of Bornwise who tried to help me he promised that he would come back to me which he never came back to me. i called on the 12 Dec 2019 he apologized for not coming back to me and promised me to buy me cold drink. i refused to meet with him. Last week i received a call from the confirmation department that within 3-7 working days i will receive the phone iphone 11 white in color. Today is the 23 Dec 2019 i called vodacom because i wanted to check how far the delivery is because the number of days that i have waited i have never experienced it with vodacom. Only to be told that the phone have not yet been processed as there is a shortage of the color that i wanted this after 6 days of waiting.and all along i was under the impression that i would receive the phone no one from vodacom bothered to call me and inform me of the delays i have to call them and do follow ups. Just spoke to him now he says the thought that i have received the phone already as the where mail circulating that the iphone was going to be available on the 13 December 2019. How can Vodacom confirm the deal if the phone is not available