It's Waka Network http://wakanetwork.com/wpages/waka-pages.html - stating you have won a $100 gift card for completing an on-line survey. It also gives you an opportunity to be removed from the calling list by pressing 2.
Get at least 3 calls a day from this number. Suspect it is diabetes related. Answered once and asked NOT to be called back but they persist. If there is a class action suit, let me know as I will join in......