Why can’t I turn off Hong Kong, Ootai and Taiwan text messages?

The reasons are as follows:

1. The service was not closed according to the correct process: Make sure that the operation has been carried out in accordance with the requirements of the SMS service provider. You need to send a specified text message or call the customer service number to shut down the service.

2. There is a problem with the mobile phone number: Check whether the mobile phone number is entered correctly, and make sure the number is activated and can receive text messages.