I need some BIG help considering a denied payment.?

I sent some money to a seller from my debit card through Paypal and the seller denied the payment.
I am trying to resent it today and my debit card has no money, where is my money?
My balance is also 0.

He denied the payment? And you lost your payment as well?
Maybe something wrong with PayPal. I would open a case on PayPal, and ask them to fix this right away!