I disabled the service as per the instructions on this page: 
[How to disable Apple Push Notification Service (apsd) on OS X 10.8?](https://apple.stackexchange.com/questions/92214/how-to-disable-apple-push-notification-service-apsd-on-os-x-10-8) 

Yet this service is still running at startup!

How do I disable it once and for all?

Edit: I'm using Mojave