Number seems to be a automated scammer. when you ignore/dont answer, it does not leave any messages and it continues to redail you up to 5 times. When you call the number it is busy 24hrs a day.
My suggestion is since My numbers are and I keep them updated on the State and Federal No-Call lists is that you block this number if you can or ignore it. They are obviously SCAMMERS that are not following the law. I have found out that filing complaint with the no-call list does nothing at all unless the SCAMMER is making threat of violence. When I have talked to the state Attn Generals office and the Federal Attn Generals office they tell me that there is not enough funds to enforce the no call list laws and the laws were made mostly to quiet the public and make them think things would get better. As a result many places are now using these lists as their call lists! so we are screwed either way!