How do I remove a second phone number associated with my iTunes account?
My ex wife and I bought two iPhone 5s's and shared one iTunes account. Since we split up, I traded my AT&T service in for a new iPhone 5 with a different carrier. Somehow in the setting up of the new phone, iMessaging tuned itself on with the unfortunate result of my ex getting all my texts. Not so good. Anyway, with iMessaging enabled, I show two phone numbers: my new one and my ex's. How can I remove my ex wife's phone number?
Thanks.
iPhone 5, iOS 8.4.1