User Activity

I am going overseas and wish to close my account with e-bay can some one help me
I sold an item on the 24th march and on the 28th showed up as gone thru checkout to bank account . It being easter I was not to concerned but it is still not turned up in bank account . I contacted buyer but no response . . Is there anyway she can go...
It did have a tracking number and I have been keeping the buyer fully informed as to my dealings with aust post . I have also given buyer the investigation . If aust post cant find it what are my obligations to buyer
What does this mean (apart from the obvious) Is she trying to stall from paying ?or could there be another reason
after winning auction went to pay for item immedietly Pay Pal informed me that the seller was not a registered seller I sent an e-mail to seller and have now received a e-mail back saying someone else has paid for this dress . I realize they dont wan...