This number, +18669070207, is a clear case of a spoofed number, likely being used by scammers. Multiple users have reported receiving persistent calls, often daily, with no voicemails left behind. Those who have answered have encountered scammers trying to pull off various schemes. If you're getting these calls, it's best to ignore them. Don't answer, and consider blocking the number to avoid repeated harassment. Stay vigilant and cautious, especially with calls from unknown numbers.
Despite numerous calls and no voicemails, it is likely that this is a spoofed number, and others who have answered have reportedly encountered scammers, so it is advised not to answer.
Daily calls are made, but no voicemails are left.