Another Labs problem

I was invited to todays lab but can't play because I have the wrong steam account linked to my ea account and I cannot unlink the current steam account because it hasn't been linked for 365 days. 

I contacted ea help and they started a case but I was told it can take up to 72 hours to just get a reply from them. Which is obviously not going to help in this situation.

What can I do? Is there a way to get another code so I can install Battlefield Labs on my currently linked steam account?