Super bad service

Very bad experience as the manager of the store Quinton gave me the worse service in the history of Game Canal Walk there was a promotion on Facebook they found and when I questioned them about it they firstly are not clued up on their product knowledge and then the manager spoke to me with an attitude I told I know it says 1 deal per customer but if I leave that store and walk back in again am I not a customer again then he said No!!! Super rude was so disappointed in the service as I was buying these item for kids.