Who do I talk to about waiting on hold for an hour and a half only for the specialist to hang up on me without saying even hello?

I need help getting the Economic Impact Payment tax rebate. Turbo tax has exactly zero information on how to get this done if I've already filed and so I waited an hour and a half on hold only for no one to say anything, phone just went quiet, and then they hang up. I don't know what to do, I feel like I have no options.