Transferor::cancelTransfer

static function cancelTransfer($callId, $code, $reason)
{
	$transferCall = Call::load($callId);
	if(!$transferCall)
	{
		return false;
	}

	$transferCall->finish([
		'failedCode' => $code,
		'failedReason' => $reason
	]);

	Call::delete($transferCall->getCallId());
	return true;
}