Greetings, KyegimyaAsura!
Thank you for posting your concerns about the extra battle chat messages that you have been receiving. I have made sure to submit your information to the development team, and they will make sure to thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on your thread, but I do recommend checking here or here for any details regarding the development team's investigation. Thanks again for your report!