Iphone passcode compromised
My iPhone is being compromised by an assailant using my ICCID numbers issued by AT&T store representatives
My iPhone is being compromised by an assailant using my ICCID numbers issued by AT&T store representatives
If you feel an unauthorized person/app is remotely using, controlling or monitoring your device, then that is possible only if you have done one or more of the following Don'ts...
If one of the above is true then quickly change the Apple ID Password and Return iPhone settings to their defaults.

Keep the iPhone updated to the latest iOS always and never Jailbreak. That's it.
iOS / iPadOS devices cannot be hacked or infected with Virus / Malware / Spyware unless you have intentionally downloaded spurious software or unauthorized apps directly from the internet and installed them on your device or/and have Jailbroken.
It (Hacking) also depends on how careful you are in sharing sensitive and valuable information pertaining to your iPhone such as Passcode, Password, etc with your friends and family members.
Be judicious when sharing the device's sensitive and valuable information with friends and family members.

If you don't reckon what is said above is true then you have two options...
Thank you for your correspondence, however, the only people that have my number are the people that I want them to have access.
This pedophile grandson had assistant from AT&T referencing my ICCID NUMBER
That is how him and his assailants are able to hack into my phone
Iphone passcode compromised