I've spent a lot of time in the telephony, call center, crm space and built a lot of applications that involve incoming phone calls and sms. I don't know of a product that works exactly as you specified but I have constructed things that did part of that for conferences and audience feedback.

You should take a look at some of the Quick Start guides on Twilio.com for example SMS applications that are very easy to construct. You might be able to create what you need by combining a couple of them together. I have years of experience with the Twilio platform so if you have any questions about it I'd be happy to do a call with you and help you out.