bad customer service, a manager screaming at my ear & saying i should try my luck with their customer

I bought a pump up bed from them ( Outdoor Warehouse in middleburg) on t the 27th July, hoping to use it on the weekend of the 2nd Aug - i tested it on the 31st to see if it had no leaks, to my surprise it was leaking, i send it back to the store the next day - to my surprise the store manager tells me they are not at fault - i ask them how because i haven't even slept on the bed, its not even 10 days since i bought the bed, nor have they tested instore on my departures to prove it wasn't leaking - whose fault is it , there's a cut on the matrass & they said i should try my luck with their supplier ... really, really ... can a customer try their luck with a stores supplier to see if they can help with damaged goods. where is customer service?