It's silly to be nice in this case. Come on, I 
mean, why bid? Whenever I order something, I go 
through with it, same with auctions. If I change 
my mind, I retract my bid IN TIME! No bumming the 
seller afterwards.

1. Report them so your fees be refunded
2. Leave negative
3. Ignore their begging explanation-seeking 
emails. Cuz there's no need for an explanation. 
You're likely to get a negative, too. Respond to 
it, stating the naked facts.

*hates deadbeats, come across 2 in a long time*
Ore-sama