Complaint - Cancellation of order

I made an order at Rochester (Tulisa Park) in December 2015. When I placed the order, the staff were friendly/helpful (as I would expect, given their reputation). As it was the month of December with the factory closed, they notified me that the order may take longer as usual. I agreed for the delivery to be made at the end of February 2016. With the 30% deposit paid, I received an email confirming the sale. On the 24 of February, I called them just to confirm the date the actual delivery will be made. They told me that the order got cancelled, but with no ability to tell me who cancelled the order or the exact date. I would assume it is standard practice to notify the customer via email in order to confirm a cancellation. However, I did not receive an email of such sort and still waiting for my deposit to be transferred (given that I didnt cancel). I requested to speak to a manager, but after a few calls to the company he is still unavailable. During all my calls, there were only excuses and no mitigation steps to correct this problem. I am talking about alot of money, and the furniture is rather urgent. This is unacceptable behaviour for a respected company