Turkish Airlines Denies Disability Discount

I'd like to purchase a THY ticket for one disabled person, one companion, and one adult. They are, however, removing the 20% discount that the disabled person and companion are entitled to in various ways. They claim that in order to purchase a companion ticket, I must first make a ticket reservation and then present the necessary documents to receive the discount. They do, however, charge a reservation fee. When I try to make a reservation online or via the app, they tell me that because I chose adult, it cannot be changed to "companion." When I call to make a reservation, they charge a service fee. It is the first time in my life that I have seen a service fee charged for a company's product. They claim that because you are purchasing a ticket from THY, you should pay us a service fee! I call their customer service and we have a video call. Customer service representatives, on the other hand, are clueless. They all give different responses. One of them claims that I can provide the companion document via video call, while another claim that it can only be done at THY offices. I've spoken with them several times, and my patience has worn thin as a result of this nonsense. I went to the THY office at Istanbul Airport to avoid dealing with these absurdities any longer. They attempted to sell me a round-trip ticket for 2031 TL for 2415 TL. THY tickets are cheaper when I check them on my phone, but they are sold at a higher price. I came here expecting a discount, but they are selling them at a higher price. Despite showing them the document, they struggled for 10 minutes and couldn't identify the companion. The people working there had no idea what they were doing. Then I took my document and left because the price had gone up. I drove all the way there and paid for parking. I had to deal with inept employees. They claim to offer a 20% discount, but when I call them, they charge a service fee, and they don't offer it online. When we go to them in person, they take advantage of us. Simply state that you do not provide discounts and do not bother us. Instead of making our lives easier, you are making them more difficult. The child's account is already marked as disabled. Why can't we bring a companion? Why are you causing such a commotion? When we opened the account, we already presented the required documents. Isn't it possible to identify it automatically? Your employees are inept and misinformed.