$shipmentsNotSent = DB::table('shipments')
        ->whereNull(['billedAt','agentBilling'])
        ->whereBetween('date', [$startDateNS, $nowNS])
        ->get();

public function getbillingUploadStatusAttribute(){
    $billingUploadStatus = $this->billingUpdates()->where([
        ['actionCategoryID', 1],
        ['actionID', 2]
    ])->orderBy('created_at','desc')->first();
    return $billingUploadStatus;
}