Called and hung up

8 calls within the last 2 days, call and hang up. No idea of a company because goes straight to a recording when called back.

Calls me at least 5 times a day when answered either hangs up or there's no one on the other line

transworld systems. wouldn't tell me why they called when i refused to give them my phone number. said it was a "personal business matter". i said what is the nature of the matter and the line went silent.