I purchased and items on the 7th of November and received part of my order on the 2nd December of which the main item was not delivered after send multiple emails they then decided to say the item is out of stock No compensation from them or an apology

I purchased and items on the 7th of November and received part of my order on the 2nd December of which the main item was not delivered after send multiple emails they then decided to say the item is out of stock No compensation from them or an apology. My first time shopping online was horrible