Subscription event sending for disabled departments

I have a subscription setup to send a webhook when there is a missed call or voicemail for a specific department. Months ago we had a menu that the client could route to 3 other departments. Those other departments have been "deleted"/disabled months ago but it seems as though when an event is triggered it is sending 3 webhooks as if those other departments are still enabled. It doesn't appear to be a way to actually delete those other departments, is there a way to only have it trigger the webhook once for that main department?