Weird ebay experience this week..
Item sold last weekend, buyer didn't pay so I sent the invoice reminder. Still didn't pay so next day I sent an email. Received an email back saying that she had paid via paypal. My ebay still said the item was unpaid.
I opened an unpaid item case, and emailed her straight away to tell her. I suggested she checked her paypal etc for any issues (as I had done). She emailed saying the payment had gone out of her paypal. 
3 days later, she emailed me asking when I would be sending the item!!! I explained that I had not received payment so would not be sending, and that she would need to reply to the unpaid item case. She emailed me (quite shirtily) saying she had paid
I rang ebay at this point who were very helpful. She had manually marked the item as payment sent within her ebay, but had not paid.
I emailed her, told her I had spoken with ebay and that I would be closing the case to receive my listing fee back if she didn't respond.
Closed the case....she then left me (my first ever) negative feedback!!! How rude. I rang ebay and they removed it thank goodness.
What a loon 