Yes, you have full rights to withdraw all of your funds at all times.

Send us an e-mail at contact@shipmondo.com.
For security reasons, the email must be sent from the email address that your Shipmondo account was created with. 

This way we can confirm that you're entitled to receive the payment.
You can state in your request wether you wish to withdraw the whole sum or just a part of it.

The amount will be returned either to the card most recently used for adding funds or your bank account, depending on the agreement.

It can take between 7-10 bank days to process the payment.