I got the same thing this a.m. when called back it says for marketing research or sales call.

I received calls from 414-409-7285

Please help me to stop these unwanted phone calls.

This number keeps calling me several days in a row.  Won't leave a message.  When I called back a recording stated it was a radio station conducting market research.  Annoying.

This number called my work phone 3 times in the last day. The first two times were in the evening. This morning was the third time, and I answered with my normal greeting. No response. Then, the click and background noise on the other end. So I ask who is calling? They said they're calling on behalf of a radio station doing market research. No thank you. Call ended.

The caller was from a radio station.  Called our place of business trying to get us to listen to their station.  Asked that they do not call anymore, but continue to get calls from the same number and then they hang up.