I got this too and wondered if it was because I have a 504 (New Orleans) area code.  The number it told me to dial was (504)754-7835.  The funny thing is that I don't live there anymore and randomly got the text while I was there in the city.  Jefferson Parish is a suburb of the New Orleans metro area.  I looked up some info online and it looks like it's from the the Jefferson Parish Federal Credit Union (FCU).  See this link:  www.jpefcu.org/   Maybe they just got some random numbers to text?  I don't know how that happened.  Anyway, that's my best guess!