AVOID! Awful service, can't comment on product as ...

AVOID! Awful service, can't comment on product as I've still not received my 'Next Day Kemper computer desk (black oak)' that I ordered 26/3/20 and was confirmed for delivery 27/3.
Called twice and was listened to a message advising to call back end of week.
Used the Customer Contact Form 5/4 and received a standard reply 15/4 advising they'd be in contact in 3-4 days. Nothing.
I attempted contact again 6/5 via an email to the customer resolution team and have still heard nothing.
Item now shows on site as 20 working days delivery.
I now just want my money back (which unsurprisingly they were very quick to take way back on 28/3).