Planet X Stealth Pro Carbon bent headset cup

It was insured for a reason, kingswann2013 should claim back from the carrier and pass onto you, then you can try messing about trying to reshape it, and end up with a free frame, otherwise use the money to cover a replacement.

Don't fuck about with it first, damage it more, then try to claim...

This.

Seller owes you an intact frame or suitable reimbursement.

It's unfortunate when it's a decent seller that been shafted by courier/postman but it's not your fault so make sure you're not put out.