Issues with Check-in Process for Turkish Airlines Flight

I purchased a THY flight ticket for Samsun on July 26th at 06:20. I tried to complete the check-in process multiple times through the app, but it kept giving an error. I then tried using the kiosk at the airport, but it displayed a message saying there were no available seats and that I needed to go to the counter. I quickly asked an employee for help, showed the error I received, and was directed to a long queue, with time running out. It was past 5 AM, and I was constantly losing time. Fearing I would miss my flight, I left the queue and approached another employee, explaining that the system wouldn't let me check in and that I would miss my flight if I waited in line. I was directed to a different, less crowded counter. The employee gave me a ticket and said that their colleagues would assist me once I got there. However, there was no explanation given. When I reached the counter, I showed my ticket, and another employee said that someone would assist me shortly. I was continuously redirected without any explanation. I approached the employee and asked for an explanation, asking what information they would provide and how they would help me. I was informed that the flight was full and that I could travel on the next flight (13:40) and that I would receive a compensation of €100 for the inconvenience. I was frustrated and said I needed some time to think, questioning if all this running around for 2 hours was for this. The employee told me to think it over and let them know my decision. After 5 minutes, I went back and said I accepted. The employee told me to wait until the flight took off and then we would go to the office. I mentioned that I needed to take my medication, get some water, and use the restroom since I had been running around since 4 AM. The employee insisted that I wait there and that I could attend to my needs once we went to the office together. After waiting for 40 minutes, they called out for Ms. Yasemin to board the flight. I was confused and asked if they were mocking me, as I had been waiting for hours, agreed to the compensation, and was told to wait without moving. The employee did not respond or make eye contact, just nodded. Another male employee next to him shouted at me to close the door, repeating the same words as if telling me to get lost. They closed the door on me without even apologizing, making me feel humiliated. I boarded the flight in tears, unable to believe that I had experienced this trauma with THY. Truly shameful.