contract renewal problems

on the 2nd of november i walked into the vodacom store at the cornubia mall in durban, to upgrade my existing contract. they informed me what i needed to bring along in order to complete the upgrade. the following day i returnedto the store and proceeded to choose my phone a Sony Xperia xa1 accompanied by a sony playstation 4 of which the phone costs R299 and the Playstation was an additional R199. i handed over the documents and was told that all paper work would be sorted out, however i was told that i would have to collect my phone and Playstaion at a later date due to stock shortages. i agreed and was told that it should take around a week to recieve and that they would contact me (this was communicated to me by the store manager). i recieved no phone calls regarding the progress of the transaction at any point and had to visit the store my self on several occations. i then asked for a ETA on the phone and playstation and was told that Vodacom does not know when stock is going to be recieved. i queried on several occations and no answer could be given. today the 8 november 2017 i again visited the store and was told the same thing "vodacom does not know when they will recieve stock, but they went further to say that if no stock is recieved by friday the 10th november 2017 that i would have to pay R100 more per month for a similar deal with a playstation and a phone that i did not want initially, this was said to be the only deal they could offer me after the 10th november 2017 . as well as being told by the manager that this problem is due to the incompatancy of Sony . this is all being said after the branch said that they would contact me when the phone and playstation came in, indicating to my understanding that i would be recieving both the Phone and the PS at some point. the call center informed me that the latest i would recieve the Phone and the PS would be this friday. i then called the gateway store and they informed me that stock would be recieved tomorrow the 9th november 2017, this does not align with the story that the cornubia branch is giving me. the cornubia stores employees however made it clear today that the deal would be forfieted if no stock is recieved by the 10th novemeber. i feel as though this is unfair as i have been misinformed throughout the process and also feel like vodacom is just giving me the run around promising one thing but not delivering and making this just a horrible experience that is honestly making me frustrated with vodacom at the moment.