Wrong Information Given By Turkish Airlines Call Center And Missleaded Customer

I wanted to book a flight to Turkey with Turkish Airlines (THY), as I will be traveling with my dog. Because I live abroad, I requested that a friend contact the THY call center on my behalf. The THY call center encountered a system issue during the pet transportation process. To avoid any inconvenience, they advised us to select a ticket first, then contact the call center to confirm pet transportation availability before purchasing the ticket and registering the pet. As a result, I chose a ticket and, without contacting the call center, attempted to make a pet reservation on the THY website as a trial, but the system returned an error. I then contacted the THY call center to inquire about pet availability, and the representative informed us that it was available. I purchased the ticket during the phone conversation because I trusted the information. However, because I was unable to register the pet on the website due to an error, we contacted the call center again. This time, the call center representative informed us that there was no availability and that the previously provided information was incorrect. When we asked to cancel the ticket, they said we would have to pay a cancellation fee. We explained that this was unreasonable because the previous representative had given us this information, which led us to purchase the ticket right away, causing us to suffer this inconvenience, but no solution was offered. We paid the cancellation fee and asked the same representative about the availability of a different flight. The representative gave us false information and said there was no availability. We were able to make a pet reservation and buy a ticket for the same flight that THY had previously said was unavailable. We also had the availability confirmed by the call center. In summary, THY's call center provided incorrect information in two out of three conversations, causing inconvenience and forcing us to pay a cancellation fee. Despite this, the responses to my feedback continue to state that the information provided by the two call center representatives was subject to change and that they were not at fault. I expect them to back up their claim by providing records of the pet reservations made before, during, and after the relevant phone conversations for these flights, to ensure the accuracy of the information provided. Otherwise, I expect them to refund the unfair cancellation fee.