Hey HERVE_LEANDRE, we don't provide a live phone support service. However, you can get in touch with our Support Team by clicking HERE. After you follow that link and submit a ticket, a member of our Support Team will get back in touch with you as soon as possible.
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https://forums.playcontestofchampions.com/en/discussion/90600/how-to-open-an-in-game-ticket-step-by-step-instructions-with-pics#latest