[quote="Rence, post:10, topic:204696"]
The problem is that you bought and paid someone else for the dress. So taking it to the department store for a refund, and taking money from the store for an item you didn't buy from them, is lying and stealing from the store. They didn't sell you the dress, why should they give you money for the dress?
I would be up-front and honest about it, talk to a manager, and would have asked for an even exchange for the dress in the correct size. But I wouldn't lie to them or omit information from them in order to give me money for the dress and stick them with the extra inventory that never belonged to them in the first place. Just MOHO.
Also, not sure where you shop, but where I shop, I have to sign the return receipt, which includes the bit about having bought the original item from that store. If you sign such a thing knowing that you bought the item from ebay instead, that's fraud.
OP never suggested lying about where she got the dress. It would not be fraud as it is common practice for a chain store to accept at any of their locations returns of their merchandise purchased elsewhere. People return gifts all the time which they did not purchase, so receive money they did not spend, neither is that fraud