The problem is that, client side, we don't know that a store is frozen until you try to purchase from it and KoL says, "Oops! Sucks to be you!"
The feature request would be for us to remember that store ID and not try to go there for the rest of the session, at least. And that would be reasonable, regardless, since it is the same issue with shops who have baleeted you; we should remember that and leave them alone henceforth.
The CORRECT fix would be for KoL to fix it server-side and not present a store for consideration if it is frozen.
I'm going to submit a bug report, by and by, but it sure would be helpful if a dev with the admins' ear(s) would comment on this - if only to look at my bug report and say "fuck, yeah!"