I have an iphone and a Macbook, after update to ios 8.1 today I didn't answer my iphone, then this call went to my Macbook. I turned Hangoff on my iphone, but it still works this way. How can I turn this share thing off?
Sign out of your Apple ID in FaceTime and it will only rout it to your number-iPhone.
in your iphone go to setting-> facetime and turn off iphone Cellular Calls.
I'm not sure if that will stop it but give it a try