It can be hard to find good help. Sounds like that receptionist needs some counseling from management regarding what is and isn't appropriate to say in a patient care (or any) setting.
Don't they have phones in the toilet stalls where you work?
Didn't she have her cell phone w/ her in the tinkletorrium? She could've taken the call while in the toilet?? Kidding aside........there's nothing I hate more than people talking on their cell phones in a public tinkletorrium (stall)!