Poor service and delivery

I ordered furniture from @home, The Glen on the 29 November. The order was for 6 dining chairs and a bed. I was advised that 2 chairs and the bed would be delivered within 5 days of the purchase and 4 chairs would be delivered within 10 working days. The first delivery was scheduled for the Sat, 5 Dec (6 working days). The items were not delivered on the 5th, despite calling the store several times, I was ensured that the delivery would definitely happen that day. After contacting the store again on Sun, 6th December, I was told I would be contacted the next day. I was not contacted and had to contact the store myself and finally received delivery of the bed and ONE chair. I contacted the store again to be told that it would be delivered on Wed. I have not received the second chair and was not contacted to be informed otherwise. The second part of the order should have been delivered today, 11 Dec. Again, I was not contacted by anyone either from The Glen or from the delivery service. I made two calls to the delivery service since I couldn't get the store (engaged phone line) but still waiting for a response! The poor service is shocking, when will I receive delivery of my items?