Good morning
I have been doing IVR and message on hold recordings for 10 years. I have the equipment to provide you with 8,000Hz, 16 bit mono in WAV format. I can't attach samples to this reply but if you send me a message through this site I can send you a few examples. I can also provide fast turnaround. My standard voice over demo is on my portfolio page but doesn't really represent the tone I would use on an IVR.
Thanks for your time and I hope to hear from you soon.
Regards,
Geordie McNeil