I am still of the opinion that US needs to resolve this, not LX. LX is just acting on behalf of US, who has issued the ticket.

But this is the perfect scenario for the "blame game" and I am not surprised that US does not do anything. This is what you should expect when collecting miles with one of the worst airlines out there.

Good for you that you could get LX to help. Ultimately I think you will have two options. Either return the entire ticket for a full refund or accept flying in C. I know it sucks, but you will survive......

S