During the last 24hrs Bigpond.com members have had there
email account details hacked by a Chinese hacker.
(My account on ebay was hacked)
If you use a ********@bigpond.com email address
as your contact email account your User ID/account on ebay
may well be compromised.
(Your Password won't work is the indicator)
ebay are not going to contact individuals
To re-enable your account, if it has been compromised you will need
an alternate email account to use to retain your account.
They will only do changes via telephone.
I'd also check your Paypal account status as well.
(Mine was O'K but better to be sure.
A couple of months ago eBay was also hacked which needed a password change but paypal did not.
The marriage proposals and paypal scams increased dramatically via email etc