I'm trying to integrate Google's API and create a calendar/event on demand

Well, I've been trying to integrate the API for a couple of hours now, for some reason even tho I have no errors whatsoever I still can't add a calendar, event etc..

    $client = new \Google_Client();
    $client->setApplicationName("GOOGLE CALENDAR");
    $client->addScope(\Google_Service_Calendar::CALENDAR);
    $client->setAuthConfig('pr-test-4ad4a00e3031.json');

    $service =  new \Google_Service_Calendar($client);
    $calenders =  new \Google_Service_Calendar_Calendar();
    $calenders->setDescription('ramzi');
    $calenders->setSummary('test');
    $service->calendars->insert($calenders);

I'm doing something like this, does anyone have experience with this who could help me out? Thanks! I really need to create calendars.