Brawl Stars Changed My Username Without Permission—I Want It Restored

My Brawl Stars username was changed without my consent, and I have no idea why. I never initiated this change, and my account had no gems, making it impossible for me to alter my name on my own (since it requires 90 gems). The only explanation is that Supercell changed it themselves, but my previous name did not violate any rules or policies. If Supercell forced this change, they should at least explain why. I demand my original name back or that 90 gems be added to my account so I can change it myself. This is completely unfair, and I expect a response and resolution as soon as possible! Supercell, fix this now!