I just got the same message they used my nickname "Cereal " responded to them but nothing don't know  what to do that's kinda scary

I got the same one and it used my nickname that only 2 of my friends call me now. Idk if it's related but on my twitter someone dm'd one of my friends saying Hi at 11:02 but it wasn't me so I changed my password. I did click the link but didn't download the app that it lead me too. How do I get rid of this for good?

For text messages: forwarding any text message spam you get to the short code  “7726,” which spells “spam” on most phones, to alert your network operator to the abuse. ATT won't accept 7726 But they will accept BLOCK and return a message that the web site is blocked. forward the texts to 7726 or BLOCK, depending on your phone carrier.
http://www.att.com/esupport/article.jsp?sid=KB115812
https://www.consumer.ftc.gov/articles/0350-text-message-spam

I got a text from this number just a few mins ago it's said yo Brittany some girl is talking about you" it was 1 of 2 msgs so I guess the link didn't come through

Just got the same thing using my name