This is not from a phone. It is not from a company. It is only happening to people on Verizon because it is a glitch between their system and your account. You need to call Verizon and tell them that you saw this on a website and would like to be transferred to a Level 2 technician. The first tier have no idea what OZMAIL is. Level 2 has been trained differently. I told him I had responded "stop" to the texts and it did not work. He had to go into their system and clear something from their system.
There is no charge for this text unless you are not on an unlimited plan. If you pay attention to when you get the OZMAIL text, go check your email that you have set up on your Droid phone and there will be a new message there, but no new message indicator. THAT is what OZMAIL is...