This article is from the Credit cards and Consumer Credit FAQ, by adams@spss.com (Steve Adams) with numerous contributions by others.
The bank will credit your account and charge the amount back to the
merchant. This must happen within one billing cycle, if you have
done everything you were supposed to. If the merchant doesn't
respond, the amount is gone from your bill forever.
If the merchant disputes the chargeback, the bank has to decide who
is telling the truth. If you don't like the decision, you can go to
court or pursue other remedies that are beyond the scope of these
FAQs.
 
Continue to: