We've had the same bridge number for almost a year now! This just won't do. I'm changing the number again, just to annoy you all. We're back to 641-678-3404 extension 752. That's the number we had before 218.
There is someone on the 218 bridge who silences callers (it's happened to me) and I'm sure is able to collect phone numbers of incoming callers. This has been a problem with a lot of our previous bridges. Someone always figures out a way to get access they shouldn't have. (I remember our old 435 bridge used to call people back after they hung up.) But as far as I know, this has never been an issue on the 413 or the 641. So lets try 641 again for awhile.
When 752 gets flooded out, go to 753, then 754, then 755, etc.