Why didn't the hospital send a text message and call back?

The reason why the hospital does not call back but sends text messages is because all materials must be recorded in writing. Return visit is a way of continuous hospital service. A record sheet should be established for telephone return visits, and the reasons should be indicated for those who cannot return visits (telephone number unknown, downtime, etc.). ), as well as the opinions, suggestions and complaints put forward by patients, should be given.