DeMarini doesn't Stand Behind Warranty on Bats

We returned our sons damaged bat DeMarini under their warranty. Two weeks later we get the bat back with a letter telling us that the bat was damage not due to game play. My son hit an out the park ball. My son said that his bat felt funny at his next up to bat. When the bat was returned it said that if you disagreed to contact Kim Seigal by e-mail. I e-mailed her right away. She e-mailed me and said that her engineer said a baseball could not make that damage. She also said that a leather ball or composite baseball is not physically capable of causing the crease. Yet their warranty covers ball impact denting. DeMarini was not at the game. We pay hundreds of dollars for these bats and he did not mis-use it or do anything other than play baseball,practice,lessons and hitting in our cage.(NO machine) My son is a honor student athlete and is very upset that DeMarini thinks that he is a liar. These baseball boys at his age high school understand how much money is in put into their gear.(gloves,bats,ect..) DeMarini has lost our faith and we will not be purchasing anymore products from them. We had bought many bats troughout our kids club teams and now college but they have lost our trust.