Hi Kaily - sorry you're not feeling great,
Stick to your guns on the sofa - if you can't sort it out with the seller go to eBay itself and ask for a conflict resolution.
You have within 30 days from delivery to start that process
I have never had a refund refused on ebay
I'm not sure what to offer apart from that - other than to say please keep posting - keep asking for help - a trouble shared really is a trouble halved...and anything is better than drinking.
You'll come an amazingly long way Kaily - don't lose heart now - it'll be ok
D