Order cancellation due to inadequate information

I ordered a router from Vodacom on the 26th of November. On this day, I was informed that my request had been approved and that my router would be delivered by the following Friday. I then contacted them on the Thursday and I was informed that I wouldn’t be receiving it because of missing documents, which I hadn’t been informed to provide. I then sent through the documents, to no response. I decided to call them today (08/12/3017) to get feedback on my order, only to be informed that it was canceled because they struggled to get hold of me. This is a lie because I have been the one that has been calling them all this time!