Delivery to home is pointless

I ordered a table, parasol & six chairs on the Saturday for a get together in my garden the following Saturday. It was the 3-4 working day delivery. I got a text from wilko that afternoon saying my order had been processed and sent to the courier for delivery on wednesday. The delivery times are 8am-6pm, so I took a day off work and waited in for them! Come half 5 there's still no sign and I'm becoming a little suspicious! I phoned wilko and they checked the whereabouts of my order with the courier 'night freight'. Guess what, even though I received a text from them saying that it was due today, seems that the courier thinks the delivery date is tomorrow! What a shock! More like they forgot to load it on the lorry!!!!!! I couldn't take another day off work anytime soon, so i asked if they could deliver to my place of work between 8am-3:30pm; they said no, they can't give set times.! Waste of time, I have asked for a full refund and am going to complain too. Will never order anything from wilko that involves home delivery! Best bet for anyone else would be to get delivered in store then waste a days leave! They have lost my custom - no help whats so ever! Now I have no table or chairs for this Saturday and have had to postpone! Thanks very much wilko!