NRA (according to caller ID). Call everyday at varying times. Even when you ask them stop calling they don't. Prior to using this number they used 850-252-8717 ("Out of Area" ID). Both numbers out of the Panama City, FL area. I even called them but naturally you get a recording with no option to remove your telephone number. They are a genuine PIA and even if I did belong to the NRA I'd cancel my membership based on the continuing calls. The best thing you can do is block the number if you have the capability.
I get at least one call a day and it shows up as "IMC" on my phone. I never answer it so I don't know if it's the Nat'l Rifle Assoc or something else. The frequency of calls is annoying!