My acount was hacked

My account was hacked and someone used all 3 refunds, and he took 1000 v-bucks, and now i don’t want to buy more v-bucks because i don’t want my account to be hacked again, so please i need explanation .

Happened to me too, but left 1 refund, which I used.
Changed password and disconnected the Playstation they were using. I use x-Box.
I want to see if I can get my refunds back. Good luck.