How long does the dispute investigation process take? It may take 30 to 90 days depending on the case. You will receive communications as the investigation progresses. Related articles How do I make purchases? I lost my invitation to apply that I received in my mail, can I get it again? How do notary sessions work? Can I refinance my existing Aven Home Card for a lower rate? What types of properties are eligible for an Aven line of credit in Texas?