New Text Message From Moo

So last week i went to Disney and on the first day at the park on of my friends took my phone and changed all of my contacts to Moo so when i got a new message it was from moo and i had no idea who they were. I think deleted all of my contacts and now have to ask people who they are every single time they text and they are all like did you delete my number and i respond with technically yes, but no. Well at least no i dnt have to go through and erase numbers i dnt text anymore..