Originally Posted by
athome
Austrian is not your counterpart you have to deal with. That's Expedia, as already mentioned several times. At least not at the beginning. The charge back you have to file is also against Expedia and not Austrian, as Expedia has taken your money.
That's not necessarily true. In case of flight-only bookings, an OTA like Expedia is merely the processor, but not the merchant of record. In such cases (as my booking through Expedia for TD was), the charge shows up on your credit card bill under the name of the airline, not Expedia. Consequently, the chargeback goes against that airline transaction.
In case of bundles or package deals, the OTA is typically the merchant of record.