We are all slaves to phones and texting. I simply answer both when I feel like it and have time to. There are times it is not convenient to do so and I will catch up when it is. I never take my cell or my computer to my bedroom. I have a land-line in my room but only family generally calls on that and no one would call late or really early unless it was an emergency. So that works for me.
Oh, you are a nightshift workder. Dude you really gotta get out of that, fucks you up a lot more than you realise, plenty of studies on that shit. 70,000 years of human evolution and body chemistry geared to hunting in the day and sleeping at night, and you going to counter than all by yourself. Depression, headaches, metabolism, immune system it will effect everything, you'll end up dead 20 years early than you are supposed to. Add to that there are also all the Vampires
When you mention to people enough times that you work at night and sleep in the morning, they eventually remember and get used to it. It's either that or they are trying to be a pain in the ass or must be incredibly stupid.