What should I do with the short message calling service?

Calling SMS means that the other party has opened SMS calling service, which belongs to call forwarding. When the other party is turned off or out of service area, all incoming call information will be automatically recorded. After the phone is turned on, the incoming call information will be sent to the other party's phone in the form of SMS.

Short message call forwarding service is a short message forwarding function similar to voice call forwarding provided by operators for customers. Customers can use this service as long as they apply for the SMS call forwarding function and set the forwarding number as required. After setting SMS call forwarding, the mobile phone will no longer receive peer-to-peer messages from other mobile phone numbers, but will be directly transferred to the mobile phone calling the target number.

I hope I don't want to close it.