Poor service and promises not kept

we bought a bed on 21/11 and we had to deal with someone not really wanting to help us.After a big battle we managed to pay in cash and waiting quite some time for our receipt with the promise that we would have our double bed in two weeks ready to collect.On collection it was the wrong size. We alerted everbody but was told they can't help us until 2016 when the factory reopens.The monday 7/12 I spoke to Linda at *** and she promised that we would have our bed delivered to us before 21/12 for free and they would then collect the incorrect one.on the 21/12 no one phoned us to arrange for the bed to be delivered.I phone her again but found that she and almost every other manager were on leave and no one really wants to help you.Now they offered us some bedding to use until they can give us our bed in january because no standard bedding fits on it.They might only be able to help us from 19/01/2016.I think this is very bad and the promises were not kept. They should've compromised us with a better arrangement. The family is visiting and none of the bedding will fit now and it will look bad.We actually feel like cancelling the total thing if it wasn't such a good price.