Hi Kay,
This response is in respect of your post above made 5 days ago on the 17 August 2024.
Customs charges are generated based on declared value, currency and exchange rates at the time the import declaration was completed.
If you believe you have been charged incorrectly, you can claim for repayment if you’ve overpaid import duty and VAT.
In some cases you may also be able to claim if you’ve overpaid VAT or excise duty.
Guidance is available at:
How to claim a repayment of import duty and VAT if you've overpaid
Thank you