Misleading information on the website

On 12th Jan 2021 I ordered 2 of the following items online:- "Umbrella Aura ALUMINIUM 290 cm X 290 cm Taupe" (SKU ***1). After two weeks (where they initially delivered to the wrong address) I eventually received the order, but it was only the covers for the umbrella. Upon enquiry, their customer service told me that it was "obvious" on their website that it was only the cover. I checked again, and there was no indication of this (and have taken screenshots). There is a separate SKU for the replacement cover (SKU ***5). They refuse to honour their website on this issue, and will only refund me. I've wasted two weeks and several phone calls, and am entirely unhappy with the company attitude.