Amended return completed and then adjusted to owe the same amount plus?! Paid it now want to get it right!

Filed an amendment 6/2025 for an ev tax credit. Got the refund. Received an adjustment notice for taxes owed of the same amount as the credit plus interest. No explanation. I was scared I didn't report something so I just paid it off. Now I feel in looking at transcripts that this was an error. What do I do?? Obviously I'll try to call but then what? Anyone have any luck in scenarios as such? I filed my own taxes and amended on TurboTax online