Qatar Airways - Reviews and experiences

My flight QR170 got delayed for a whopping 8 hours at Arlanda Stockholm. Here's the kicker, I have diabetes and heart problems, so not being able to leave the plane for food and insulin was a bit of a nightmare. They told me I would get a $600 refund for the delay, but it's been over 2 months now and I still haven't seen a penny. Customer service keeps sending me useless broken links to update my bank details and they haven't been responding to my emails. It kind of feels like they're playing games and trying to keep my refund. Does anyone know where I can go to get some help to take legal action against them for this?

My first experience with the customer service at this airline was super disappointing, eh. I called twice to ask about picking seats for my upcoming flight, and it was rough. The first call got cut off after a few words, and left me real frustrated. The second call wasn't any better, I got some info but got hung up on as soon as I said I didn't want to buy seats and thought they should just be given out at check-in. The way they handled those calls, total lack of professionalism and customer service skills, was really disappointing, eh.