Hello, I'm Sourish. I have been working on asterisk, Freepbx, elastix and many other PBX system for last 3-4 years. I guess it would be a quick work for me and we can get it running within a day. I can install the PBX and configure the IVR in your pbx. You can rent a ready pbx from me with everything configured.
You can check mu past project and can be confidant to select me for this job. Please let me know if we can talk over skype and finalize the project. Thanks for your time, Sourish