Disclaimer: The materials provided below are informational and should not be relied upon as legal advice.
Under California law, the statute of limitations for written contracts is 4 years and statute of limitations for verbal contracts is 2 years. In some circumstances (such as revolving lines of credit), that latest activity on the account renews the statute of limitation. If you have a bona fide dispute over the bills, you may need to litigate it. You should consult your own lawyer to protect your legal rights.