I definitely understand your concern and I want to help as much as possible. You are able to retrieve anything deleted as long as it has been backed up from your phone. To confirm what has been backed up, you may open your Cloud app from the phone directly. May I ask what messaging app do you use?
Follow us on TWITTER @VZWSupport
If my response answered your question please click the _Correct Answer_ button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!