Teams won't log out of iPhone

[Lee-Martin]

I've recently left one of my clients, but before I logged out of my account on my iPhone they switched off my account.

Now whenever I try and access Teams on my iPhone I'm either sent to a log in screen for that account, or to my authenticator. It won't let me log out at all.

I've had messages from another client today on another account I'm also logged in with which I couldn't access on my phone because of this.

How do I log out of that account?
Thanks

[#2]

Tips to fix-

Completely cleared out credential manager
Deleted the contents of %AppData%\Microsoft\Teams
Deleted the contents of HKLM\Software\Microsoft\Office\Teams
Uninstall/reinstall with Revo Uninstaller to also remove leftover registry/folder items

Regards,
Rachel Gomez