how can i sell on ebay if my pay pal account is frozen?

[mungstr8n]

Vista print tried to renew a web site builder order totaling $400 through pay pal and there was insufficient funds in my debit card so pay pal covered the $400 taking my paypal account to -$400 so paypal froze my account and i was issued a threatening letter from a debt collection agency for $400. I can still buy things off ebay but i cant sell anything without an active paypal account. I didnt approove the $400 transaction that my bank declined due to insufficient funds available in my debit card and when i called paypal and ebay i was told bad luck. so im left with 2 websites i cant use , a $400 debt to paypal who for some reason decided to debit my paypal account $400 without my consent and i am unable to sell anything on ebay so even if I wanted to pay the debt (which I dont)  i cant raise the funds anyway........ HELP