etrailer.com Etrailer.com shipped my item without an addres - refusing to give me a refund. Wentzville Internet

I placed an online order. Etrailer.com received it, charged me, and then proceeded to ship the item without a proper address label.  I placed the order on 11/3/2016 and as of today, 11/21/2016 - they have not refunded my money.  I contacted etrailer.com and received numerous rude, patronizing replies that stated they could not refund my money until they receive the item back.  I never saw, received, touched, or was near the item.  USPS simply returned the unaddressed item to sender.  Tracking shows that the item is 1Z7586X3YW28999399.  I should receive a refund whether or not etrailer.com ever receives the item back and my refund should not be contingent upon them receiving the item as the item was technically never shipped to me.  The worst part of this whole experience is the veracity and rudeness with which etrailer.com has responded to my emails.  They are blaming me because they shipped an item without an address on it.  The label only had my city, state, and zip code.  No house number or address.  This was my first and last interaction with etrailer.com and I highly recommend that other prospective customers just order from amazon.  The people who work at etrailer.com lack ethics, practical thinking, and customer service skills.  They are a very shady company, and they care more about $25 in merchandise than they do about retaining a customer.