...but if they knew they had anxiety and are likely to flake, why on earth deliberately set up a situation where they're going to flake? THat's, again, just plain inconsiderate. Why not at least say in the first message that they might not be able to get back to the other person (no need to specify reason) so if they don't hear from them in x days, feel free to sell to someone else. I mean, it's pretty clear that OP's contacts didn't do this, or they wouldn't have been left hanging like that.