Deleted contacts after sending a text message
I have an iPhone 5s and my contacts are disappearing. They are in my address book, but after I send a text message to a contact, their name disappears and only their number appears at the top of the text message window (this only happens after I click send). These contacts have also been deleted from my address book. This has only been occurring recently, I think since the last update. Any help would be greatly appreciated!
iPhone 5s, iOS 8.1.3