I get these calls everyday and have tried to call back but there is no answer. When I tried to call it back today it said the call cannot be completed as dialed so maybe the caller was reported enough times to shut them down.
After getting calls from this number at least once a day for months, I finally decided to listened to the whole message and at the end they say "press 5 to be deleted from the list". I did that and it wasn't 20 minutes before they called again and I'm still getting calls from them every day - so don't press 5. That just alerts them that someone is at the other end and is listening to their recording.