My question involves business law in the state of: CA
I'm a small business owner in CA. We sell electronic devices. A client in Scottdale, AZ purchased equipment from us and has not paid their invoices over 3 months. We stopped all transactions since January of 2012. Amount owed is around $27000. There was no contract, but we have proof of invoices, tracking numbers/ proof of delivery to their office. He did pay for previous invoices. The guy at first was still responding to our calls and emails, promising to pay. He stopped responding in March, couldn't get a hold of him.
Please advise on what I should do at this point. Should I involve an attorney and take guy to court?
Thanks for your help.