By the way, this appears to be an absolutely enormous robocalling operation, and yet Fractel and their mysterious “reseller carrier” seems to refuse to shut them down.
“Tax Resolution Center” scam : r/Scams (reddit.com)
877-220-0211 / 8772200211 (800notes.com)
866-918-1918 / 8669181918 (800notes.com)
866-644-0156 / 8666440156 (800notes.com)