My husband is threading me with information he found on my phone, how can I get the information erased?

I am going through a divorce. My husband cohersed me into giving him my phone by paying off the balance on the phone and asking for the money he paid back on the phone or the phone itself, he knew I did not have the money. I factory deleted all the information on the phone which verizon had told me would also disable the cloud backup. He still somehow was able to access information in my phone and is now the eating me with texts and pictures. He has contacted two people I work with already. He is threading to change the already agreed upon no contest divorce unless I behave the way he wants until the divorce court date, after that he says he will erase the information but I am scared he will still use the information. How can I get the information deleted so I can live with out worrying about what he is going to do with it.