told by buyer to accept cancellation through resolution centre

[jamicorkhil-0]

Hi, Ive recently purchased an item to which the seller cancelled the order straight away. I was told to accept the cancellation through the relosultion centre but doing that it asks me when I recieved the refund? I dont want to fill this in as I havent had my refund. Seller says he cannot refund until I have accepted the cancellation. This is the screenshot he I got sent, Why should i reply if I havent recieved it? then I will never get it

[plpmr]

they don't need you to accept to refund you.

If they don't refund open a not received case one day after the last estimated delivery date -

https://resolutioncentre.ebay.co.uk/