bought an app less than 90 days, but i can't refund it
i bought a mac app in july 7 2016,obviously,there isn't 90 days enough, but i can't refund it（the reason is bought it more than 90 days)
MacBook Pro, OS X El Capitan (10.11.6)
Where are you located?
In the USA all sales are final except for certain exceptions.
What do you want a refund?
Did you contact iTunes?