Quoted from cottonm4:
If you have a verified account with Paypal, you have authorized Paypal to dip into your checking account. Just cleaning out your PP account will stop PP from coming at you. You would have to zero your bank account, too.
That's why I keep a completely separate and unconnected account only for PayPal and payment wires (different bank, no overdraft protection etc).
All funds are depleted the instant they arrive. I learned the hard way that I needed to protect myself and not rely on PayPal.