Robocall. Claim your google ad

They called me a few days ago and I called back and there was weird music then a lady said there is no one to take your call now goodbye..

These people call 3 times a day and hang up as soon as I answer the phone. Called the # back today and the first thing they say is "Can I have your name?" Requested to be added to the do not call and they hung up. Called back several times and finally got a VERY rude lady who actually listened. So who knows..

???