I've received three calls today from this number. Glad I read everyone's comments! I just bought a KIA last weekend. So I guess I will answer the next time they call. It's annoying, though, that they don't leave a message.
They keep calling after 8:00pm everyday. When I called back it was a Kia Customer Satisfaction survey - they say I recently purchased a new Kia and want to know about my dealership experience. I haven't purchased a Kia - interestingly enough I also received a message from a Kia dealership in a state I don't even live in inviting me to their customer event.
If you are getting a call then that means someone probably bought a car in your name may want to run your credit. Truly free report here, This is part of the fair credit reporting act: https://www.annualcreditreport.com/cra/index.jsp
This number calls my work line multiple times a day after hours and on the weekends. No voicemail. Have not purchased a car in years. Do not own a KIA either.