I'm sorry to hear about the unexpected language change in your account. I can definitely understand how that would be concerning. Please reach out to customer support to have the language settings restored, and also ask that they examine your account to see if there was any suspicious access. If there were any changes or transactions, they will be able to help get an investigation started so the situation can be resolved. You can reach customer support by Facebook, Twitter, or phone or email.
Once the language settings have been changed back, please make sure to clear your browser's cookies and cache in case there's a stored cookie with the wrong language setting, or a cached page that would load with the old information.
I hope this helps!
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