Seller wont my cancellation request

[jajef-53]

Purchased a Xbox one for my son didn’t notice it was collection only now the seller won’t accept the cancellation request 

I’ve been robbed 

[**peaseblossom**]

Select "Report an item you didn't receive" on here:
https://www.ebay.co.uk/help/buying/returns-items-not-received-refunds-buyers/get-help-item-hasnt-arr...
and escalate it 3 complete working days later to get a full refund.