d**k's Sporting Goods All Sales Final on bicycles, hidden policy Ladera Ranch, California

I purchased a Diamondback Incite 2 for $400 at d**k's for a Christmas present for my son on December 17, 2012. After he recieved it on Christmas, we found it to be the wrong size, so I called d**k's on December 26 and talked to the manager and was told that they don't except returns or exchanges on bicycles. I immediatly went to the store to talk to the manager inperson and show her that there is no written or verbal statement of that policy, to no avail. So I reported the matter to the BBB and posted a rant on Craigs List and here. I just want to exchange this new, un-used bike for the correct size bike or get a refund under the printed return, refund policy that is printed on the reciept.