Can I buy a divan unit on its own without a mattress

[NoseyNooNoo]

I've had a real palaver with BedsDirect (see AIBU link below) I've had numerous delivery dates and 3 wrong deliveries from them over the last 9 weeks. The only solution I can see is that they take the wrong divan back (mattress was OK) and I source a divan myself. However, I'm not sure where to buy a divan unit on its own - any ideas?

My BedsDirect Palaver

Couple here
www.memoryfoamwarehouse.co.uk/categories/Beds/Divan-Beds/?sort=priceasc

I imagine if you ask most bed places would sell you the divan on its own.

In Dreams all the beds and mattresses are separate - you buy what you need. I'm not sure what a divan unit is but I'm sure they'll have it