Turkish Airlines/Anadolu Jet Delayed the Flight for 5.5 Hours

I had planned my flight with code TK7270 (PNR V7Z2K5) scheduled to depart at 07:00 and arrive at 08:40 to attend a relative's funeral in Gaziantep during the noon prayer. When I checked the flight screens at the terminal, I saw that my flight was delayed to 08:30 and then to 08:45. At 08:30, they started boarding us onto the plane. We thought the plane would take off immediately. After my spouse and I took our seats, we waited for the plane to take off. We were kept waiting inside the plane for hours without any refreshments or food. This wasn't just 1 hour or 3 hours, but a full 4 hours, citing weather conditions as the reason. If we had been informed from the beginning that there would be a 5.5-hour delay, I would have disembarked and requested a refund. Despite all this, the doors were constantly opened for passengers who wanted to get off, which delayed the flight permission by 20 minutes each time, causing chaos. We missed the funeral prayer and burial, and incurred unnecessary expenses. Waiting in a stuffy plane without refreshments and with no visible flight attendants, where occasional arguments occurred, was very difficult. My spouse is pregnant, adding to the stress of missing the funeral. Anadolu Jet (THY) did not consider any alternatives or the comfort of the passengers. We had to call out to the flight attendants just to get a glass of water, and then they disappeared. THY is responsible for this entire psychological ordeal and for missing the funeral. I demand a refund for my flight, or I will initiate all legal proceedings. Thank you.