make a specific Iphone automation task for me: "ignore call from specific caller between specific hours"

I would like to automate the following for an iphone SE , running iOS 14.3. I think it should be possible through workflow/shortcuts automation: -between specific hours on workdays, and in the weekend -I want to be able to have my phone automatically ignore calls from a specific caller do not disturb function is not a proper option, as this means I need to define who should be the exception (everyone else can pass incl unknown). willing to pay ~10euro