I've never seen mushrooms growing out of a wall like that before. It would certainly be a troubling site and I don't blame you for wanting it resolved quickly. That said, there really is no quick fix for something like that, is there? It sounds like you've had a bad situation made worse by some bad luck -cat/phone but keep your chin up, something good is bound to come your way.
I wonder, are the Hubski stickers I sent going to go to your old address? Let me know if you don't receive them and I'll be sure to get more out to you.
Good luck Jana!