DELIVERING ITEM NOT ORDERED

I received a call from a Vodacom subsidiary informing me that my mobile was due for an upgrade. I asked if there were any packages with wifi and I was informed that there was and it I chose the one with 10G data. On delivery I received a USB stick - no wifi router. I called Vodacom to complain and sales told me to get the upgrade department. Upgrade said its a sales issue. I eventually spoke to Brian who is supposedly in a senior position. Brian gave me a ref no S3-9O83J-J6IYZ. Brian informed me that he would call the company and get them to give me a call and that he would request them to fetch the incorrect item. Delivery took place on Monday, I called Tuesday and I also informed Brian that on Friday evening that I am leaving for Cape Town till the new year so they need to pick it up before Friday end of business. I also informed Brian as this was an upgrade that is more that in the event they Bill me that I would return the debit order as I refuse to pay for something I don't have. I have 5 contracts with Vodacom and this will then affect all five. This is the second time I have had this type of issue with Vodacom. Kindly will someone from Vodacom respond and sort this out