Not sticking to promised dates and not responding to enquiries.

I have ordered an item from Yuup and was told that the item was in stock and that processing will take 1 to 5 days and that I will be sent a tracking number in that time. It is already 8 workings days now and I have not heard anything from them yet. I have sent emails to them to enquire about the status but do not get any reply from them. They also do not provide a telephone number to call them.