Legal Question in Criminal Law in California

Really need more information. Is this a breach of contract issue? Please re post with more information.

In order to say what court would have jurisdiction, we need to know what happened. The answer to your question depends upon the nature of the legal claim. Your question does not suggest that there is a claim at all, and it certainly doesn't say what kind of claim it might be. After all, making a phone call isn't a crime, and it generally doesn't give rise to a civil cause of action either.

Note also that there are two types of jurisdiction -- personal and subject-matter. All the state courts in California have the same subject-matter jurisdiction. All regular federal courts (as opposed to specialized courts for bankruptcy, immigration, etc.) have the same subject-matter jurisdiction as one another, though not the same as state courts.

Your question may be about personal jurisdiction. It might also be about venue, which is a related but different concept. Both personal jurisdiction and venue depend upon the nature of the legal claim the court is being asked to resolve and upon the parties' factual allegations. As I said earlier, we can't answer your question because you haven't given us any information about the claim.