How do i refund founders pack?

It is about to be a week since the update and the game is still unplayable. Im unable to even get on and do my dailys as it requires challenge goals. Love missing progress towards the "skate pass" because the game just crashes or won't register me completing the challenges while playing solo. Just wanna refund my founders pack and uninstall this broken game. Literally unable to work towards one of the purchases in the founders pack. Waste of $50. Someone please help me refund this.