VODACOM NEW CONTRACT COMPLAINT!!!!!

I received a new phone on contract a few weeks ago (iPhone 15). The phone started overheating to the point whereby I could not even hold it. We then brought it to the Vodacom store within the first 7 days. They sent it to the repair store, and it was received by them on Friday the 3rd of November. Now, according to my knowledge & iPhone policy which I have attached, if the store is not able to repair the phone within the first 7 days, I am liable to receive a brand-new phone because it is regarded as an "out of box failure". The repair store advised me today that they are still waiting for a part which is currently on a shipment & they do not know when they will receive it! First of all, I am not willing to accept a second-hand phone because that is not what I am paying for. Secondly, I want a brand-new phone by tomorrow the 10th of November because tomorrow will be the 7th day. I cannot pay for a phone at the end of the month that I did not use, and it is not my fault that the phone was/is faulty. Apparently, the repair store does not have people to fix Iphone 15 yet, this is absurd. I paid the R300 activation fee & I will be billed at the end of the month for a phone that i don't have. I am very upset about this and I'm tired of hearing people say that they're going to follow up. I don't want any follow ups. I WANT A NEW PHONE!