To Do Claim And Cancel
(1) Click [My Account]
(2) Click [Resolution Centre]
(3) Click Dispute A Transaction
(4) Choose Item Dispute [NOT Unauthorized transaction]
(5) Click Continue
(6) Find Our Transaction ID
(7) Put Some Random Stuff Down
EG: I Haven't Received The Item
(8) Open Dispute
(9) Go To [Resolution Centre] And Cancel The Claim~