Whitelist/Accepted Caller Bank for Landline

I receive an absurd amount of spoofed phone calls every day and only want to receive calls from contacts I trust. There needs to be a white list or accepted caller bank for xfinity voice landlines so that users can control the received calls. I already have the highest level of spam blocking enabled as well as nomorobo on my landline. Please Xfinity, hear out the MANY customers using xfinity voice and create a solution. It would be a very welcomed feature on the VOIP-based service you offer.