Company disappeared off face of earth

In October 2020 I purchased a desk and cupboard from the company which were both delivered within the agreed timeframe and in good order. This year in March the company offered a special on shelves - having had a good experience previously I ordered and paid for a set of shelves. Before going on leave at the end of April I e-mailed the company to enquire about delivery. They assured me that the item would be delivered within days - as I was going on leave I aske them to delay delivery to 11 May. Having returned from leave I have sent numerous e-mails to the company - none of which have been answered. Phone calls have gone un-answered and the company's website, Instagram and Facebook feeds have all been taken down.