I need a phone that’s why I paid for an early upgrade

I kageso Maleka did an upgrade online on the 4 witch was a success I asked for a quick delivery which they told me it will take 3 days guess wat in three days my phone was at a wrong location in Kimberly and am at Mpumalanga middleburg I lodged a complain at dsv mtn deliveries no respond till today I got my phone 9 days later on the 12 December I open the phone to start operating and do the settings the immiditely start heating up became very hot I could not even switch it off as it was not responding to anything b3 became low phone went of tried to charge with it b3 does nt pick up stays on 1 percent mind u I used original iPhone charger..I cald 135 informed them they said I shud take the phone to the nearest mtn I called the middleburg mtn in midwater they said they cnt take my phone the dnt wrk with online i then cald the mtn in the mall a lady called sandy said with a nice voice don’t worry we will help you. Next day I go there with the phone cnt find sandy she is still busy and the ada one helped me as I was explaining she said they don’t do thise it’s just a favour she booked my phone for collection she said I must know I might not get a phone soon I will get a phone February and I said that will not happen I paid for an early upgrade bcoz I need the phone and am not waiting a 2months for an exchange neither am I paying for ******* goods they send iPhone 16 pro max. So I ask in gods name help me resolve dis matter bcoz I need a new phone