I want these people to quit calling

I want to know who this is and I want them to quit calling me every 5 min. Is this a real business or scam?

I have no idea who this is but they keep calling me and I ignore it but they still continue to call.

They called and did not leave a message....SCAM..?????

I have received a phone call from these twits everyday at many different times.  Since 217 is obviously a cell phone prefix, I would guess they are scammers.  I don't answer my land line and have the ringer turned off also.  People like this are the reason.  If I didn't need it for the burglar alarm, I would not even have a land line.  Since they keep calling everybody and not leaving messages, I would guess they are some sort of scam like reverse mortgage or security alarm company or something like that.  Telemarketing companies often pay pennies by the call, but more if they deliver their pitch. The lazier ones just call and let it ring a few times and hang up.