I feel your pain. I have friends with the same dilemna, and I know how hard it has been for them to find shoes that fit, let alone ones that are comfortable and stylish.
I am sorry that those Adidas sandals didn't work out for you. I can imagine how frustrating it must be to spend that much money on shoes that end up causing you pain
In any case, I hope you're able to find a pair of sandals that work for you soon.
it's unlikely because even though I am just above average height and size I am a giant here in Asia :)