I seem to be getting a lot of spam text (SMS) messages lately from phone numbers with an incorrect format for my territory. The number format I normally see is (xxx) xxx-xxxx. The spam ones are coming in from 333330000 and 333330005 and so on. I use Hangouts on Marshmellow 6.0.1 does anyone know of a way to block text messages from off number formats? I would just block the numbers they are coming from but the number is always changing.