How can I disable voicemail notifications? I have a prepaid T-Mobile line that I use for development purposes only. I do not really use it for calls. However, some 800-number company has been calling me constantly (which I have already added to a "block" contact which directs all calls to voicemail via Contact app menu option). However, they leave voice mails which creates this notification on my phone:



Click the image for larger variance

But I cannot swipe away this notification. It is a constant and persistent notification.

Is there a way I can either:


Never show voicemail notifications (without having to call T-Mobile and disable my voicemail box)
Swipe to remove the notification or hide the notification (via an app or similar?)


I am rooted on a stock Nexus 5.

I would have just used Google Voice as my voice mail box but apparently T-Mobile prepaid lines cannot have call forwarding so I can not use that option.
The only thing that worked for me is to stop the Phone Application. It restarts itself again, so you don't have to worry for missing calls or anything.

Steps:


Settings -> Apps -> ALL -> Phone.
Click Force stop


Source:
Clear Voice Mail Notification Icon