Code 300008 on ps5

Refund please. Since ive had this game it has been unstable. Everyday i experience crashes, lag, or login issues. I cant spend 10 minutes looking at my loot chest without it freezing up than having to close the game. Why is this game online only ? I wasted $70 on this crap and im very angry i could’ve spent that on a game that is playable. Unacceptable. Shame on you Blizzard. Please give me refund.