Called 1/13/17- did not answer, left no VM

Has called repeatedly over the last 5 weeks. Each time they call it's 3 times in a row and less than a minute apart. I decided to answer and as soon as they heard my angry greeting a younger male blurts out, "Hello. I just want to inform you this conversation is being recorded. We see you expressed interest on our site about a job.."
I cut him off and told him I never expressed an interest in any (expletive) job. No legit business calls, informs someone they are being recorded and starts blabbing without stating who they are and what company they are with. And I'd appreciate it if you quit calling multiple times in a row like a stalker."
They hung up.
Location says "Dana, IN", but the number is an Illinois area code.

keeps calling even when told not to call back. my call blocking on phone dosn't stop him from calling