my calls are all directed to my office line. if it's a true emergency, they can call my cell phone #.
it's up to the customer and me to determine what's an emergency.
i'm typically reachable by phone 24 hours a day and every now and then, i'll get the zombie calling at 3 in the morning thinking it's normal
the non emergencies calls get returned either during the day while driving or at night time when i get home. the emergencies i speak to at the time they call and depending on the issue, i either jot it down or call them when i'm free. but i do answer and give them assurance i'll call them back
there is no one better determining what's an emergency and what's just a nuisance than the person who actually is doing the work. that's the actual plumber. not a service.
a service is fine if you don't want to be bothered at work. but a service is not a plumber who can assure the customer that it's ok
i guess i don't get all the telemarketing calls to warrant a screening process.