Air India — Unethical behaviour - worst customer service

I booked my flight a month ago but Air India changed my flight timings three times before my travel date. Then, just 1 hour before departure, they canceled my flight via email, leaving me stranded. They rebooked me for a flight the next day, but it had a 16-hour layover for a simple domestic connection, which was unreasonable. With help from my travel agency, I changed it to a better option but had to pay an extra 46 to reschedule. Unfortunately, due to an Elizabeth Line failure, I missed my flight the next day. I went to the Air India reception at the airport, where the staff initially said they would help. Instead, they wasted 30 minutes of my time, only to tell me I was a no-show and that all my remaining tickets were canceled. To make matters worse, the flight did not even depart on time. It left 45 minutes late. My travel agent said he could issue a full refund before 1 pm, but Air India wasted time. In total, I paid 972 and had to book a new flight for 1500 for Thai Air.