Why can't 123 15 get through?

123 15 has been disconnected. It will be sent by SMS in the future, because SMS can avoid the problem of telephone congestion and can better handle a large number of consultation and complaint requests. 123 15 is a public service hotline in China, which is used to provide relevant consultation and complaints from government departments and public service organizations. Because the service hotline receives a large number of calls at the same time, it will cause the phone to be disconnected or congested for a certain period of time. Sending SMS can avoid the problem of telephone congestion and ensure that problems or complaints are handled in time.