in need of some big help. my cousin had logged into his launcher on my computer and not realizing, i added my account to it thinking it was my launcher & now i cant get my stuff unlinked from him ... i know im not able to do it myself but support gotta be able to do something...
You will have to message Jagex to request some help about this.
Go to the
Unable to submit an account recovery
support page and use the 'Contact Us' button to message Jagex.
I know that support page might not seem like the right topic for you but it IS the right contact point to start on for the issue you have.