Yes, KoalaCalling.com DOES offer a custom IVR and extensions service. The cloud IVR menu with advanced options enables customers to set up complex rules, more than one greeting, and other settings. Basic IVR set-up incurs no additional cost. However, advanced IVR setup may have a reasonable development fee, depending on the case. We can provide professional voice recordings and prompts with a custom service quote. Contact us for more information on advanced IVR set-up.