I do that too, and I asked each person to pick the song they want as the ringtone. Rolling Stones "Monkey Man," Blue Oyster Cult "Godzilla" and B52s "Love Shack" are examples. If I don't know the number, it rolls to voice mail and I can check delete it at my leisure.
I've read the Bill of Rights and nowhere do I find that a ringing phone has a right to be answered.
My daughter lives in Amarillo, so I used to have Amarillo by morning on my old cell phone, but it’s not on Zedge. For my son I have Bad to the Bone and for those calls I have a ring tone that’s called Answer me