I have several transactions that were doubled in my bank register. I try to unmatch and delete them, but they come back. How do I delete permanently?

Your issue with duplicate transactions ends here, @aresendez-atlas.

One of the possible reasons why there are duplicate transactions in your Bank register is that you've recorded transactions within QuickBooks and add them from the Banking page. Since deleting them within the bank register doesn't work, you can undo the added transactions and match or exclude them from the Banking page. 

Here's how to undo transactions:

1. Click Banking from the left menu.
2. Select the appropriate bank account.
3. Go to the Categorized tab, then find the duplicate transactions and click Undo under the Action column.

Once done, the transactions are now moved to the For Review tab. Then, you can now match the transactions or exclude them. This way, it'll get rid of the duplicate transactions in your bank register.

After removing all the duplicate transactions from your bank register, you can now proceed with reconciling the account. For more guidance, feel free to check out this article: Reconcile an account in QuickBooks Online.

Should you need any additional assistance while managing your bank transactions, you can leave a comment below. I'll be sure to get back to you.