Vodacom unable to rectify a mistake they have made

I upgraded one of my contracts to a data+device deal on 26-Nov-18 I was upsold from Dell 13” i5 to Dell 13” Dell i7 for R369 Device was delivered, I opened it on to find that it was not what I ordered I called Vodacom contact centre on the 29th November to arrange pick up of incorrect device and to have the device I ordered delivered to me Was told that I cannot get the device I want as the investigation has to be conducted first (Investigation meaning listen to original call on the 26th November) I had to call the contact centre on 30-Nov-18 to have the call listened to in order for me to receive what I ordered Agent had advised that she would log the complaint and escalate the query and that I should receive a call back-NB: Never happened On the 30-Nov-18 after no call back was received, spoke with Thnadeka who said the previous agent had not escalated anything and that I should forget what the other agent told me No call backs received, nobody following up on query I called the the call Centre again on the 3rd December 2018 and spoke to Gloria Nsizwne she promised me that a call will be logged and that she would send her Team leader an email to listen to the call that was made on the 26th November and that Keddialetse from the upgrades department will call me back with feedback. I still didn’t get a call. Vodacom blocks me from calling the upgrades after sale department so I need to call ********** 004. When I call this number the people that answer cannot assist me with my query as they do fibre to the home note to yourself this is a charged call and they have actually wasted my airtime. I eventually got hold of a guy on the number ********** 004 by the name of Yusuf. It was quite a lengthy call. He advised me that I should actually speak to the upgrades department, I however explained to him that I cannot speak to them as they have blocked my number. Yusuf has taken the liberty to email the upgrades department and let them know my story on the 7th December. He was able to advise that Vodacom has in fact received the device and need to do a contract reversal. This has still not happened nor has any Vodacom person given me a call. On the 7th December I was also advised to send an email to ********** which I have done but that is also a dead end. This is by far the worse service I have ever experienced. Prior to this upgrade I was on a data contract R199 for 5gig because of this issue I have not used it because the contract was converted to a 1gig package with a Dell Laptop that I am not able to use because it’s the wrong deal. So I actually lose my 5gig and I lose my “1 gig “ Your query has been escalated to one of our Solution Experts. Your ref number is: 1- ********** ********** Visit www.vodacom.co.za/app from your phone. Thank you, Vodacom [Service RequestOwner Group]