CALL blocking is inadequate
Spectrum's call blocking is inadequate. Spammers are easily spoofing your system by falsifying the incoming numbers, showing them to be within the local prefix. When the number is blocked, they call the next day using a different number. The Spectrum whitelist option is limited to 30 numbers and had been that way for years. Time to expand the formware features. On mobile equipment, programs like TRAPCALL solve this problem by identifying spammers more readily.