hey guys...just got a new tire on today....i DID have 711 kumhos on all 4 tires but some buttmunch slashed one

so i had to have it replaced or i was stuck..and i need my car...anyway..they said they had the EXACT same tire in stock and could change it in just a few minutes..which they did change and i took their word that it was the same..i looked back and saw the kumho on the side and smiled

..got back home and found out it wasnt even the same tire !! its kumho supra ..712 i think?? not even same tread!
so my question is does anyone think ill be able to take this crap thing back without problems?? anyone know the return policy most shops have?? i know i shoulda checked it there but i took the word a professional company and didnt think they would lie to me