How do I delete text messages from my mobile hotspot?

[MS59]

I get non-verizon text messages on my jetpack.  I'd like to delete them, but can't figure out how.

[I did figure out how to block at least some of them tonight - I don't want to have to pay to receive texts about free cruises to the Bahamas!]

[7e18n1]

Which Jetpack? On a 5510L, login to the web interface at http://192.168.1.1, navigate to Messages, scroll to the bottom of the page and click “Delete All Messages!”