It is pretty simple to make certain that you are receiving the Facetime calls you want, and not those you don't want.
1. Begin by touching on "Settings"
2. Then touch "Facetime" in the left column.
3. Uncheck email or phone numbers you don't want, and add email accounts that you do want.
Make certain that your Facetime friends have the new email/numbers to contact you.
That should take care of it, happy therapy!