I cannot access FC 26 due to account compromise

Hey guys, 

I play FC 26 on the nintendo switch. A few days ago, my nintendo account that was linked to my EA account, i.e. the nintendo account I use to play FC 26, was compromised. This means that I do not have any control over my nintendo account profile, and the hacker has altered my email address linked to my nintendo account too, making things much worse.

I cannot login to my nintendo account, and if I try to on my switch, the email is shown as the hacker's, not mine. This way I cannot access my nintendo account profile, as well as any games associated with my nintendo account too, i.e. FC 26. 

Is there anything EA can do to help me with my problem, for example, trying to secure my EA account that is linked to my nintendo account to ensure the hacker is unable to access FC 26? Or, should I do something else? 

I am able to access my EA account for some reason, so have changed my password for it.

Please help, 

Thank you