And I can get some sort of refund if this is a system error, which I whole heartedly hope it is.
As written by others I also think that this is a unit mixup.
And you can check it very easily by checking if the remaining fund in your wallet is USD 120 (3x40) lower then what you expected it to be.
As for refund request.
Once transactions are in the blockchain they can't be changed or refunded.
If you sent someone too many bitcoins you can kindly ask him to refund you but you can't force him.
In case of fees it would be even more difficult because the fee is given to the miners that secure the network and you do not know who they are.
