SEND IT BACK. IT IS BROKEN. IT SHOULD NOT BE BROKEN.
DO NOT FANNY AROUND REPAIRING IT.
Sorry for shouting, but the item is clearly not of "merchantable quality". It should be "free from minor defects" - that huge fookin crack is clearly more than a "minor" defect. Therefore it wants returning to the supplier (at their cost), and either exchanged for another item, or a full refund issued.
