Unable to update Windows, and I am unable to unroll the system too

I am unable to update Windows; it's not downloading beyond 99% in the update window. Brattary drining is high, so I want to unenroll the current device from the Windows Insider program for now, which I am unable to do. When I unroll it, it's showing unrolling is queued but not unrolling. Help me to unroll this device and get me to a stable update by Windows so I can work smoothly.