Your situation is not uncommon. If your ears have not been sending sound signals to your brain for a long while your brain forgets those sound signals and must re-learn them. That can take weeks.

My first hearing aids gave the same thing that you’re experiencing. Then I saw a different audiologist who said that those first hearing aids were way underpowered for me and got me ones that were much better. Hearing aids don’t “fix” hearing loss. They only make it better. So, yes, go back to your audiologist until you’re satisfied. If you’re still not satisfied then go to a different audiologist. Audiologists don’t all have the same skills for setting up hearing aids and people react differently to hearing aids and hearing aids don’t all work the same. It’s complicated. Stick with it.