smilonface

My Father recently passed away and he had a 16x32 inground, concrete pool that I am now caring for. The pool had MAJOR water loss during the winter. I refilled the pool several times and it always drains down to the same spot. Eyballing it, it looks like it drains to about "ground level" (since the pool sits up about 3 ft. The water leaks well below the return lines, skimmer and light. I am thinking it could be the bottom drain or underground pipe? I still have the cover on the pool. Please help. Not sure if this can be fixed or is the pool a demo. Thanks so much for your help. I called 6 pool services, multiple times over the past month and cannot get even one to come out and look at it, let alone return phone calls!