Originally Posted by FBinNY

Maybe, the devil is in the details. You describe this as a new bike, but the rest of the post implies that it's a new to you, used bike. Then I don't know what the "safety check" by the bike shop implied. If you asked them to review the entire bike for any safety issues, then it could be argued that they missed something they were paid to spot.

Fortunately there doesn't seem to be any injury, so I'd start by returning to the shop, telling them what happened, and seeing what they say. Depending on the outcome of that, your next step might be to consult an attorney. Unfortunately without serious injury with a large potential payout, you may have trouble getting an attorney interested, and your best remedy might be in small claims court (if that becomes necessary).