Didn't answer and they didn't leave a message. I called the number back and it was a recording saying that it was American Residential Home Warranty and if you had received a call from them, they wanted to call telling me about a special promotion.
I called the number back and got an automated response saying, "This is the Health Enrollment Center, the reason for our call is for the 'Affordable Health Insurance', and if you're not interested then press 1 etc.". The area code is Canada, which is weird for someone in Canada trying to sell us Americans the Obama Care Insurance.
Confirmed what Dennis said, its a health insurance sales company but if you call them back its an automated system and you can press 1 to remove your number.
I just called it back today. I got a recording saying their closed for business and to please call back later.. I've received several calls from numbers with the same area code as this one. The calls come in during My hours of rest as well. Quite a nuisance for sure.