Being billed for something I STILL haven't received

It's simple. Ordered a device. The courier leaves the device at my place of business as I'm out of town, but then calls back to insist that they need the required documents and not just consent. I said they should then collect the device and return when I'm back, but never did. Cell C now has put the item on my statement after countless calls to their call center to tell them that I am still waiting for the order and that it shouldn't be on my statement. At one stage a rep of theirs said that the courier confirmed that it was indeed collected, but that was the last I've heard. Their call center system is useless, having to explain everything to different agents over and over again with every phone call. Summary: Being billed for something I STILL haven't received.