Wrong order left me with a new device I can't use

I was at your store in Vodacom world on Friday 1 April to do an upgrade. Firstly the lady that help me could not do the upgrade as she did not know how to add certain codes to process the upgrade and she had to call Vodacom upgrades to assist and we all know how long you wait on line for vodacom to help. With the upgrade she needed to do a sim swop and migration too. Now she has done it in the wrong order, and because Vodacom only process 1 order at a time and the migration will only go through the 1st of May and then the sim swop, I am left with a brand new device that I can't use for a month. I tried to sort it out with the store since Saturday, but struggling to get through on the phone and when I do get through I am told they are working on it. Now today I was told that they have to cancel the upgrade and do everything again and can take up to a week. I need this sorted and my sim working by the end of business on Monday 4 April 2016. I will also lay an complaint at Vodacom and centre management at Vodacom world.