Anonymous reported number as Scam suspicion

Female voice on voice-mail claims to be from "Spectrum" offering a 50% discount on my existing account. However, I don't have a Spectrum account, and I never have had a Spectrum account. The call came "from" 623-977-7329, which likely was a spoofed number. The call-back number left on voice-mail was 833-467-2089. Same automated female voice on voice-mail supposedly from "Spectrum" as on numerous other scam calls from various other likely spoofed numbers claiming to be from "Comcast/Xfinity" also offering a 50% discount on my existing account. However, I don't have a "Comcast/Xfinity" account and never have had a "Comcast/Xfinity" account. The call-back number on these calls always is a toll-free number (beginning with either 888, 877, 866, 855, 844, 833, or 800), and when called back, even if it's the same day, there's always a message that the number has been disconnected. The spoofed number called "from" always is different on each of these types of calls, and the call-back number also always is different on each of these types of calls, too. We have received many, many of these calls supposedly from "Comcast/Xfinity" over the past couple of years. And, so far, we have received two of these calls supposedly from "Spectrum" over the past few days. You can do a search on this topic and you will find more information confirming that these types of calls are coming from scammers.