(louisiana) Relative Facetimed Me During Apparent Suicide, No Idea Where He Is, Police Refused To Help

My relative was released from rehab and was supposed to be en route to a sober house. Rayville area. He facetimed me while parked, said he was “in the woods”, I could see a garden hose looped thru window, told me it was time for him to go, chatted with me for 8minutes and then said he needed to adjust the hose bc he couldnt smell exhaust even though he was huffing near the hose. He never called back. I called local police, they sent me to sheriff, who sent me to a diff parish police, who sent me back to the original police. I asked them to ping his phone while we know its still on. they told me they cant take my statement over the phone and that I need to go to my own local cops her in new england and report it and they can ping it and then call the sheriff and let them know where he is. My local police (state cops) said thats the most i sane thing theyve ever heard. Its been 6hrs at this stage. Any ideas on how I can get someone to look for him?