Thanks for confirming,
Unfortunately, in that case, there really isn't much you can do. There is not a device to produce the results you are looking for on a small scale.
You could use an answering machine, but it would play a greeting message, usually limited to about 1 minute, and then roll over to recording a message from the caller.
What you are wanting to do can ONLY be accomplished by a PBX system, with an auto attendant function set up.
I can recommend a suitable system for you if you wish, but that is really your only option.
If you don't want to set up on site equipment, there are some virtual pbx systems available, through the use of a VOIP based phone system, where you'd pay a monthly fee for that service.
If you have any other questions, just let me know. Otherwise, please rate my service; hopefully I have earned 5 Stars. I also invite you to contact me directly with any future support needs at http://bit.ly/1QwLxGh
Thank you, ***** ***** a good day,
I am an independent technician and I've spent my personal time, unpaid, in an effort to assist with the question for which you solicited my services. This site works on the honor system, and to that end, I have prioritized working with you ahead of other paying customers.
Although you’ve already paid your fee to the site, I am only compensated for my efforts when customers such as yourself leave positive feedback for my work. Again I apologize there is not a better outcome here, though this is really beyond either of our control. I do hope you’ll consider leaving a 5 star rating for me, rather than “shoot the messenger”, so that I may get credit for my time spent in good faith to answer your question accurately.