What is the legal way to deliver a legal notice in the UAE?

Ways to deliver legal notice to the warned.

I filled up forms at the Dubai Court website and they issued an electronic notarized legal notice. What are the legal ways to deliver this legal notice to the warned?

In the past, the lawyers and employers of the warned refused to accept the notice. And the Warned keeps on changing phone numbers and email addresses.

I heard there is a company called Tableegh that is authorized to make delivery of legal notices.

Are there any other companies similar to Tableegh?

How to publish the notice in a newspaper?