One very important aspect of suing an insurance company for bad faith in their claims handling process is that first, with extremely rare exception, you have to prove a breach of the insurance contract.
Insurance policies are contracts, and as such are subject to rules applicable to contracts generally.
A plaintiff seeking to recover on an insurance contract must prove that the contract was in force at the time of the loss. Also, a party who claims under a policy is required to produce the insurance contract upon which he sues or to prove its terms. This was made clear in the 1975, Tyler Court of Appeals opinion, Hartford Acc. & Indem. Co. v. Spain. And, as illustrated in the 1992, Dallas Court of Appeals opinion, St. Paul Ins. Co. v. Rakkar, to prove a breach of contract, the insured has to establish: