Why are people getting texts from me that I didn't send?

[simonlebon]

I have had a couple people in the last few minutes say they got messages from me that I didn't send.  How is this happening and how do I prevent it from happening again?  Doesn't Verizon have some way of preventing this from happening?

Thanks

PS> I am a prepaid customer, does Verizon have a support number where I can talk to an actual person?  I can't find any support and even the chat is automated. Horrible!

[Ann154]

The prepaid customer service number is 1.888.294.6804 or *611 from your phone.