I was told that I had been refunded but I did not receive the refund.

Sometimes we are able to cancel orders instead of charging and refunding you.

The cancellation means that we will not charge your card. IDM purchase transaction will never settle in your card statement. It will look like this purchase has never been made. Thus, you will not see IDM charge in your final bank statement.

If you see a charge now, it may disappear soon. Your bank may hold the funds for a few days but then release the funds back to you.