Why did I turn on interception and there will be text message bombing?

because what you asked is that only one number interception is turned on.

When blocking is turned on, there will be SMS bombing because you only block a number, and the merchant will continue to send it to you at another number, so you will still receive the SMS sent by the merchant.

If SMS is bombed, you need to install mobile phone security software, which can shield some spam messages from bombing, or report to the public security organ, and report to the public security organ after being bombed by SMS, so that criminals can be punished by law.