Chargingback may prove challenging depending on the card issuer - worth trying if nothing else works...
But BEFORE doing a chargeback, be very sure that any any bank account number you provided PayPal is blocked from ACH withdrawals -or- closed (including various associated accounts, such as savings, money market, etc).
AND all associated credit card account numbers provided to PayPal should be closed (PayPal keeps a past record of acct numbers).
AND finally, if you currently have much money in PayPal, request a *paper check* and/or *spend it* - withdrawing with direct depost (ACH) while quicker, can be easily reversed; not final for 60 days - closing bank account doesn't fully protect one from an ACH reversal later.
To be clear, some of my suggestions are extreme and may be overkill for your situation, but do not underestimate PayPal; be sure to read the book length PayPal legal/user agreement you agreed to - it's an eye opener ... and since PayPal is NOT a bank, they're free from most all regulation - they can do pretty much what they please with one's money ... and do :(
You may want to post a thread at PayPal Sucks too asking for assistance
http://www.paypalsucks.com/
Ron