Jason from National Energy wanting to talk about solar panels for the home. This is computer generated voicemail - the phone never rings,just pings announcing a voicemail. This sounds like some millennial kid complete with upspeak syndrome.
If your number is registered on the Do Not Call list, then it is still an illegal telemarketing call.
Ringless Voicemail : http://800notes.com/forum/ta-e1b1192aca8a6f3/ringless-voicemail