an application I deleted is reinstalled every time I turn on the computer. How can I permanently delete

To uninstall Endpoint Security VPN for Mac from a client computer:

1. Double-click the Endpoint_Security_VPN. dmg file. After the disk image mounts to the file system, a Finder window opens with the contents of the package.
2. Double-click the Uninstaller to start the uninstall process.
3. Do the on-screen instructions.

OR

Uninstall System Center Endpoint Protection for Mac

1. Locate SCEP for Mac in the Applications folder. ... 
2. In the Contents window, browse to Contents / Helpers and double click on Uninstaller.
3. A System Center Endpoint Protection Setup window will appear. ... 
4. If the uninstall process is successful, you will see a confirmation screen.

What specific Application ? Details please.