There is no such thing as the Blue Cross/Humana network (so you know this is a total scam). Humana is owned by Aetna, not Blue Cross & neither one makes cold calls, especially as this is not an enrollment period (Usually October thru January cut off). Even then, you must either call them yourself or go online to indicate that you have an interest in their companies (usually Obamacare & Medicare option plans). I BLOCKED the # & hope everyone has, too.
BTW, many people are not aware that their phone carrier (whether this is for a landline or cell phone/iPad/tablet (in case you have FaceTime), MUST provide you with "Call Blocking Tools" free of charge so you can implement them & reduce these Spam/Scam Robocalls calling you. However, if your Voicemail has a Blocked Messages section, the phone won't ring, but they will still be able to leave a message. This is great in identifying who & what these scumbags are/want, so you can report back to us what their Scam is.
Thanks for reporting.