As you've already been told several times, send it back.
One thing I'd like to add: Don't give up on modern S&W revolvers just yet. Yes, you need to inspect them thoroughly before taking them home, but there are good current production S&W revolvers out there, and with some after market care and tuning, you can make very nice revolvers out of them. Starting with a J-frame was maybe a bit unfortunate as many of them do seem way too expensive for what you get, and especially the lightweight ones can appear to be somewhat flimsy. Check out a couple of larger frame S&W PC revolvers on occasion.
One thing I'd like to add: Don't give up on modern S&W revolvers just yet. Yes, you need to inspect them thoroughly before taking them home, but there are good current production S&W revolvers out there, and with some after market care and tuning, you can make very nice revolvers out of them. Starting with a J-frame was maybe a bit unfortunate as many of them do seem way too expensive for what you get, and especially the lightweight ones can appear to be somewhat flimsy. Check out a couple of larger frame S&W PC revolvers on occasion.