The bet couldn't be accepted with wrong odd on it. It is basic. And I complaint immediatly when I noticed it.
They knew the odd changed, and they didn't suspended that bet as they should. So I loss 1000$ immediatly after placing it as I couldn't even sell my bet by similar amount.
I think I'm getting to understand your case fully right now, and for me I think if only you can proof that your complaint was made before the game was played and you lost it, then you truly deserve your betting refund (i.e $1000), But if the complaint was made after the game got played and you lost it, then... (I reserved my comment). And I think it's at this point, I let the casino representative do this job regarding this case, as I'm really interested in this case and will love to see how it ends. However, I'm wishing you good luck.