[iMore Question]

I have calls showing up that were made on other phones on the same account

[Just_Me_D]

I'm going out on a limb and assume you're referring to FaceTime calls. If so, use a different Apple ID for each device. If not, the problem will continue.

[Ledsteplin]

If all the devices are yours, you can use the same iTunes ID for them all. But iCloud, iMessage and Facetime ID's should be different.