Square just got back to me about my refund for Heavensward. I bought the expansion upon hitting level 50 expecting to move on to Ishgard, etc etc. Turns out I still had to play through all the irrelevant lv50 content, but in the meantime of doing that I grew bored of the game and had no interest in Heavensward, hence getting a refund. Kinda felt scammed.

Such a shame. I was pretty excited when I hit lv50, but doing endless fetch quests for virtually no reward (4k exp at lv50) for over a month really killed the game for me.