Only received half of my online order

I have ordered furniture online 29 March all items that were in stock, paid same day... I was meant to get delivery of my entire order yesterday 20 April, but only get half of my order delivered.... after various back and forth I was promised the outstanding item to be delivered on Saturday (21 April) at 9am... waiting at delivery address desperately trying to reach someone but DC no answer not even customer care is able to assist. I am infuriated and frustrated it’s been the worst service I have received!