Should really you buy from us and need to return your cartridges, you can do so within 6 months of buy.Si eres el propietario de esta empresa y deseas asumir el Regulate de la misma, haga clic en el botón "Aceptar".In case you’ve carried out all this and you still haven't obtained your refund but, you should Get hold of us at admin@thecartridgeg