Apologies if this is the wrong forum but I'm looking for advice on how to resolve a dispute with Swissair about a ticket refund I am owed.

On Sunday, Dec 23, 2018 at 4:50pm, I confirmed purchase of a round-trip ticket for business class airfare (JFK - ZRH on Feb 20, 2019, returning Feb 28, 2019). I was billed $2,114.76 for the ticket and a $27.00 secure booking fee. WITHIN 24 HOURS, on Mon, 24 December, 2018 at 8:20am, I cancelled the ticket. Per the terms of the original purchase agreement, I was informed that I would be entitled to a refund of the $2,114.76 ticket price, (but not the $27.00 booking fee, which is fine).

[Statement from email confirmation: Customers who make a reservation may cancel their reservation without penalty up to 24 hours after the reservation is made, if the reservation was made seven days or more prior to the flight’s departure.]

I called Swissair customer service the day after Christmas to ask how to process the refund. I was told by the agent that I am entitled to a refund of the ticket and to submit a ticket cancellation request online. I submitted a refund request and shortly after received notification that I was only being refunded $62.16. Since then, I have called customer service multiple times and sent multiple emails to Swissair to request a refund of the remaining $2,052.60. (Original ticket price of $2,114.76 minus $62.16 refund already issued.)

I've filed a complaint with my credit card. Any other suggestions on how to get this resolved? It's very frustrating and seems very sloppy, if not illegal. It sickens me to think that they have my $2,000 and I may never get it back.

Thank you!