Remember, scammers, snake [***] low life scum bill collections agencies, and unscrupulous phone sales rooms don't abide by the do not call list. Businesses and associations that you have done business with and their "affiliates" are exempt from the Do Not Call list limitations. Also, many calls made in representation of groups like the National Rifle Association, the demoncrap and republicant parties and other political/sudo political or non profit organizations are not made, nor necessarily approved by the organization, but are made by agencies that are hired by someone to fund raise. Some of it is legit, some isn't. Legit fund raisers for non profits and political parties or some political action groups are not bound by the "Do Not Call list" and the non-legit ones, don't give a rats backside.
Also, keep in mind, that many phone service providers (mobile and landline) have ways to block calls from specific numbers. If you have a persistent pest contact your phone service provider and find out how to block the annoying number(s).
Got a call first time from this number yesterday. Left a message regarding lower credit card rate, etc. Called again today but hung up as answering machine was picking up.