Originally Posted by Majuki

If it happened to me I would still dispute the charge. Usually the issuer will give a credit immediately, but some might perform the full chargeback. By allowing the DCC charge to stand it gives an incentive to continue the behavior. It's a matter of principle for me, not a dispute over being overcharged.

For the pending amounts, it depends how the charge is sent. I have seen some places in HK hold the non-DCC amount, but I don't know if that amount would have been different if I had accepted DCC.