I say send it back in and give em a chance to look it over. Ive had my BodyGuard for a little over a year, and haven't had a single malfunction out of it. More than 500rds through the gun so far, reloads and defense ammo as well. I have 5 factory mags, and practice with the gun every range session as a finisher so I stay used to shooting a gun so small(also my only DA carry gun). I occasionally pocket carry, and also carry it IWB in a tiny holster.
I will admit that ive had issues with the slide not locking back on empty, sometimes even when racking the slide back on an empty magazines. I figured out that the mags were just so dirty the followers were sticking and wouldn't catch all the time. After taking them apart and cleaning them up they worked 100% again.
Not defending S&W, as I know they have had issues with the BG. Just letting you know that some of them run, and run very well and accurate.