public function didFailRefund(PhortuneCharge $charge, PhortuneCharge $refund)
{
$refund->setStatus(PhortuneCharge::STATUS_FAILED);
$this->openTransaction();
$this->beginReadLocking();
$copy = clone $charge;
$copy->reload();
if ($charge->getRefundingPHID() !== $refund->getPHID()) {
throw new Exception(pht('Charge is in the wrong refunding state!'));
}
$charge->setRefundingPHID(null);
$charge->save();
$refund->save();
$this->endReadLocking();
$this->saveTransaction();
}