Customer brought under false pretense when upgrading

I Upgraded on the 20th June 2023 with Cell C Head Office over the phone. The consultant promised me that they did have stock of a i-phone 14+ 512mb that was on promotion. I numerously asked her if they had stock and she kept on saying yes. Remember Calls are recorded... It is today the 27th of June 2023 up to and until today i did not receive my phone. After trying to enquiry they cannot enven now tell me the exact date that i am going to recieve my phone. Apprently they got an update from I-phone that is is not going to be anytime soon. I am leaving for oversees and wanted to take my new phone with... Now i am not going to have a phone. I phoned the Manager today and tried to upgrade / change my contract to a i-phone 14 - 256mb just to get a phone - and the manager told me she will change it and i will receive my phone tomorrow. I afterwards enquired because i shaw cell c was trying to phone me just to find out my contract have not been changed and they do not have stock of the i-phone 14 aslo??? Can you please help me URGENTLY!!