If you have no idea where the call came from, you will need to contact Muncipal Court, JP Court, County Court (at-law), District Court (and for good measure the Criminal District Court if it is a protective order). The best place to start is the family law clerk for the District Clerk's office, and ask them to search for your/your wife's name. Many jurisdictions also provide this information online at their website.
The above answer does not create an attorney/client relationship. These responses are merely intended to provide general information about the question asked. Frequently, the question does not include important facts that, if known, could significantly change the answer. Information provided on this site should not be used as a substitute for competent legal advice from a licensed attorney in your community. The law changes frequently and varies from state to state. You should verify and confirm any information provided with an attorney licensed in your state