James,
AnswerNet can set up and host an automated answering system that will allow your clients to process transactions over the phone. However, normally people like to talk to a live person instead of an automated answering system. We can also provide representatives that will process your client's transacations over the phone via your company's website.
If you would like to learn more and get pricing, feel free to contact me directly at
kelsie.garlic@answernet.com Hope this helps!