Fix shutdown, fix broken announces

local/telegram/telegram.go

@@ -78,14 +78,14 @@ func Connect() {
 	log.Debug().Msg("Connection with Telegram established")
 	for update := range rawUpdates {
 		log.Debug().Msgf("Update of type %s received", update.Data["@type"])
+
+		<-c.ShutdownDone
+		return
 	}
 }
 
 // Shutdown disconnects from Telegram
 func Shutdown() {
-	_, err := client.Destroy()
-	if err != nil {
-		log.Error().Err(err).Msg("Failed to destroy Telegram client instance")
-	}
+	client.DestroyInstance()
 	log.Info().Msg("Connection with Telegram closed")
 }