Bugs found in analytics

I have been dealing with issue for about six months that I believe came from a phishing attack. My phone passcode will change and disable, apple accounts will try to force a password change and my T-Mobile account has been accessed. I try to keep my device off of Wi-Fi which seemed to help but I still have problems with accessibility setting being changed, calls muted, etc. Apple support has been very little help. The problem is following me on different devices. Has anyone else been through this?