Turkish Airlines Flex Ticket: A Costly Disappointment with No Refund

I paid extra for a Turkish Airlines flexible ticket that allowed for cancellations and changes. When I attempted to make changes, they refused and denied my refund. It's a business that conveniently bends the rules to their advantage. It's extremely disappointing, and I'm looking for assistance in resolving my complaint. Purchasing a flexible ticket should provide travelers with peace of mind, knowing they can adapt to unexpected situations. Unfortunately, my experience with Turkish Airlines has been completely different. I'm hoping that my problem can be resolved quickly and that I can get the refund I'm due.