I feel for you, V. My stepmother loves to call around 10 pm on Fridays, when I wake up at 5 am Sat. Drives me crazy. I've asked her not to call then, but that hasn't worked.

I turn off my ringer, but I'm old school, and have an actual answering machine on the land line for call screening, so I can still hear her message. Oh, and sometimes, if I don't answer my land line, she leaves the message, "Oh, I guess you're out. I'll try you on your cell." Then she calls my cell.

These kind of annoyances can cause as much or more stress than the "bigger" things in life, so if you can't get the solution you like (for them to stop calling) you have to make a compromise, like turning off your phone. It's not the ideal solution, but compromises never are.