Refund Plus Subscription
Once you’ve cancelled your Marco Polo Subscription, you’re able to request a refund from Apple or the Google Play Store.
In order to get a full or partial refund, you’d have to contact Apple Support. You can follow Apple's instructions on how to do this here: https://support.apple.com/en-us/HT204084
In order to get a full or partial refund, you can go here to find out more information about making a request-