critical battery warning

Short version - we have a faulty drone and want a refund, DJI want to replace the battery (again) but we are not interested. Longer version below. My wife very generously decided to get me a drone for my birthday and spoke to the local DJi representative who recommended she get the DJI Vision...

I was flying this morning and when my P4P said return home because of low battery and distance from home point I hit return home. The battery was at 27% so it was heading home like normal and then gave critical battery warning and started landing with 24% battery remaining. I was unable to stop...