php twilio hang up not working by updating status

So im doing a ringless voicemail and have everything working except for the initial call is not hanging up. I've added a timeout of 5 seconds to it which ends the call but sometimes i still get a ring or a number called on my phone. Ive tried to hang up 2 ways.

$message = $this->client->calls($_REQUEST['CallSid'])->update(
            array('url' => 'twilioxmlHangup.xml',
                "method" => "POST")
        );


<?xml version="1.0" ?>
<Response>
<Say voice="alice">.</Say>
<Hangup/>
</Response>

I also tried

$message = $this->client->calls($_REQUEST['CallSid'])->update(array("status" => "completed"));

Im trying to cancel the call after i make my 2nd call and it doesn't seem to do anything. I found this which is similar but don't understand what needs to be done. Twilio hangup call through REST API not working?

Thank you

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