Ultimate team account hacked

I logged onto my account to see that 70k coins are gone and all my good players are sold. Someone hacked into my account, and when I checked in the trusted devices tab, it said it was someone on the web app from Singapore and Frankfurt. It all happaned in the last 3 hours while I live in madrid. With all my coins and money from the players sold, they bought players like kolo muani for 10k. They even left one in my club. What can I do? I grinded FIFA for the past month only to lose it.