Sustomer

A customer of insurance who is almost certainly attempting to commit insurance fraud

Pet Insurance Rep: "We're trying to get medical records, but this client is claiming the pet has never been to any vet; though the pet has been spayed and is up to date on vaccines, and they mentioned seeing a vet in a previous conversation"
Insurance Adjuster: "I found the medical records, looks like they asked the clinic not to send them to us and didn't want us to access them because the pet has several pre-existing conditions that they've made claims related to."
Rep: "Hmm.... sounds like a Sustomer to me!"