Banned from the Colosseum

Hello. Please tell me what I should do. On February 23, 2026, I was banned from the game Star Wars Galaxy of Heroes for using cheats in the Colosseum, and it turned out that my Google account had been hacked and I wasn't the one playing. I've submitted an appeal three times, but it hasn't worked. What should I do? Please help me. My ally code is 418-873-853.