Listen to Rebecca! This is a well known scam. Even MK warns about it. Do NOT send anything. Block the number. Ignore the texts. Here's a plethora of information:
http://www.bbb.org/southwestern-missouri/news ... he-latest-scam/
http://komonews.com/news/consumer/fake-order- ... reps-11-22-2015
http://800notes.com/Phone.aspx/1-205-208-3114
http://www.scamdex.com/ScamTipReports/14149