Thanks clarry, I hope you're right, it's just that a couple of things aren't adding up - when they responded to my first enquiry, what made them think I had already received it? And when I insisted I hadn't and they conceded it hadn't been sent and would send it the next day, what made them upload an old tracking number that would show shipment from December instead of a new number from a new shipment? The problem is, there's lots of people out there with stories that start out "I'd been buying from X company for ages without any problems, until...". 😕 

I have sent them reply explaining about the tracking number they used, so I guess I'll have to wait and see for a bit.