Someone has been using my Apple id
I keep getting messages from Apple with dates about my iTunes store activities, my purchase history even though I haven't done anything. There are equally times when I get a failed to verify account information messages even though I haven't done anything. Could it be an app doing that or some dishonest person somewhere accessing my account?
I recently changed my password and instituted a two step verification security measure. Then all of a sudden I get another message after about 2 weeks of doing that that my billing information could not be verified and that my account risked being disabled.
How do I proceed in this instance?
Thanks for helping
Windows, 6