both the exchange and unconfirmed transaction that has been pending for long.
This has nothing to do with the exchange, if it's confirmed the balance will not reflect on the exchange's wallet balance since the deposited amount is less than the minimum requirement which will be clearly mentioned in the deposit page.
Now you mentioned unconfirmed mean you can double spend the funds to different addresses which can be your own and with the nodes enabled full RBF it is now possible to do replacement TX to different address and fees.
Follow these steps to do that.
For making the replacement transaction, you can also use electrum.
- Create a new wallet using your private key.
- Let your wallet get synced and then disconnect your computer from the internet.
- Go to "console" tab and use this command to remove the transaction you want to be replaced from your wallet: wallet.adb.remove_transaction("TXID")
- Close electrum and open it again.
- Make the replacement transaction and export the raw transaction.
For broadcasting the replacement transaction, you can also use electrum. To do so, you should change servers until you connect to a server which allows you to broadcast your replacement transaction.