public function getCustomerCount(string $startDate, string $endDate, string $country): int 	{ 		return Customer::whereBetween('created_at', [$startDate, $endDate])->when($country != 'ALL', function ($query) use ($country) { 			$query->whereHas('addresses', function ($query) use ($country) { 				$query->invoice()->where('country_code', $country); 			}); 		})->count(); 	}