Just got a spam SMS from this number. Some mobile carriers have a special SMS number where you can forward such messages. With my carrier (AT&T) the number is 7726. When the message is forwarded, an auto-responder asks for the number from which the message was sent, so that they can take appropriate action. More about AT&T's spam reporting service can be read here:
i have gotten multiple texts from (469)503-7791 saying someone referred me and if i trust my employer not to lay me off and that i should call. clearly i'm not going to but id like them to stop texting me.