Legal Question in Civil Litigation in California

The information you have given us is helpful, but it is not enough to give you even an approximate price tag. You're arguing about the facts, but procedural matters are more important in answering your question.

Were you served with the summons and complaint? If so, did you fight the case or was there a default judgment against you? If you litigated, did the case go to trial? If not, why not? Was there an appeal? If so, when was it decided? If not, when was the judgment entered? Were you served with notice of entry of the judgment? If so, when? How many bills are there, and for how much? What makes you believe the other side's evidence was not genuine? I could go on.

Even with this information it may not be possible to give you a number. But your odds of getting one will be much better.

Did you have proper notice?

A case like that, depending on the details, documents, etc would be between $2,000 and $5,000, I would estimate.

You are going to have to speak to an attorney. The issue here is whether you have grounds to set aside a judgment for a defect in service, not because of an evidentiary issue.

I doubt you'll find any experienced attorney to do this for less than several thousand dollars. You'll be telling him all the facts you wanted to tell us, and he'll be charging for the time to figure out what your claims and support are drafting all the pleadings, and having the hearing. Good luck. .