There are other fundraising organisations like Dialogue direct?
To be honest though, I don't think you're missing out on much. I know quite a few people who have done fundraising, including with Wesser and most of them mentioned that they encountered a lot of abuse from people they were asking money from. It's not an easy job and a lot of your salary is commissioned based.
Don't despair yet though. It is the weekends. They''ll probably be contacting most people Monday