Ring the real estate back and tell them if a plumber is not sent out today you will be lodging a complaint with the ombudsman. That is just terrible.

Regards,
Dianne
This may still not work. If not, I recommend marching yourself in there and telling them that since you have no toilet at your house, you'll be using theirs until they get it fixed. That is just not good enough. Even "I'll pass it on" is not good enough.