Teachers often send messages to my father about how to cancel the school newsletter. So is there any way to cancel the school newsletter and never let the teacher find out?

School newsletter is a short message service for schools launched by mobile phones. Monternet Technology, a company in Shenzhen, is now promoting this business. After the general company settles the school leaders, it signs a contract with the school, and then forces every student and parent to use the business. This business seems to be a monthly 10 wallet service, which is purely a spam message of notification. The school has added your father's mobile phone number to the number pool of SMS group sending, unless you use this mobile phone to call 10086 to cancel this service. In addition, asking the school teacher to do it for you and deleting your father's mobile phone number from the school SMS system can achieve the same goal.