I googled paypal right after signing up and before ever using them and immediately cancelled my account when I saw how many charges of fraud have been linked to them. There's definitely a problem going on there.
It may be worth it to cancel your card NOW, before the charges go through. Even if it means an overdraft charge, that can be reimbursed to you when all this gets straightened out. You could contact Amazon & explain, they probably would also dismiss the overdraft fee under the circumstances.
Good luck, Jenn