*LINE Official Accounts can use group chat only if they are already invited to the group by LINE people. เป็น ลูกค้าประจำด้วยคูปอง ไม่ว่าจะเป็นส่วนลดต่างๆ If you gained a information not from a firm's official account but from a person you do not know, consider the steps in Stopping chat messages from people https://sergio0344o.thenerdsblog.com/41872262/considerations-to-know-about-line-official-account