Ok, I have been checking over the various forums. This is becoming a MAJOR issue with Verizon. At first, they blamed phones with the Android OS, then various phones. Well, I have the iphone 4 and it has happened to me today. I had someone send me a text. I never received it but got a phone call from the person who did wanting to know what the hell was going on?!?! Now, it just so happens that it was an innocent conversation between friends but I can see how this could be a MAJOR issue in a different circumstance.
Here is what happens, you send a text and it is sent to another random person to whom you text frequently. If that person then lets you know that they are receiving your texts and you attempt to text the person who is sending them, the original wrong recipient gets that too! In essence, you are in a 3-way.
You can delete all your conversations strings to try to prevent it from happening but it will still happen and resurrect your deleted threads. So, everyone BE AWARE!! There is a lawsuit in the making here. Had it had any kind of financial impact on me today, the lawsuit would have begun here.