Others say that when you call and wait for a connection, there will be background music instead of the traditional beep ... beep ... how can you cancel the music? !

Use the M-Zone. M-Zone is always like this. Your idleness has something to do with this nonsense. You must have accidentally clicked on your mobile phone or something to send you a message, and then you started this service yourself. If you want to cancel, call the mobile customer service directly. Ask if there is any related business first. If yes, ask customer service to cancel it for you, or cancel it by SMS yourself. If not, your friend is joking with you. Good luck, I hope I can help you.