If your device is broken, or you strongly suspect it is broken, this is something that you'll need to contact your device's manufacturer about because we do not supply or support the devices themselves.
These are a few of our supported devices' contact pages:
For Fitbit Contact: http://help.fitbit.com/?cu=1
For Garmin Contact: http://www.garmin.com/us/support/contact?#fragment-1
For Jawbone Contact: https://jawbone.com/support
For Misfit Contact: https://misfit.com/support/