You were NOT commited to the sale man. If you EXCHANGED money, then negative him and take appropriate action.
If not, stop whining. Big deal you have to wait a little longer for your battery.
Crap happens in the world man, so suck it up and wait. In all honesty thats the bittersweet truth. If you don't like it, get a battery from someone else. Feedback is used to rate and TRANSACTION.
Thats it. Nothing else.
Even though people give negative feedback for flaking, I think thats bull. But thats my own opinion. Obviously if they were like oh I got the money!11!1one!1!eleven!1!1!! then made you blow off other sales, then fine, -, them. But deffinatley you are completely wrong in this case.