In short, there is no way (technically) to get your paid items that have been deleted, either by you or not, refunded in Roblox. It's the game developer's official policy that refunds for Robux (which is the blocky games' virtual currency) are impossible. Source: Roblox
Will I Get My Robux Back If I Delete/Do Not Like an Item? At this time, there is not a way to get Robux back once you have made a purchase or a way to delete an item made by Roblox once it is owned. We recommend you to use our Try it On Feature before completing your purchase.
This is what you need to do to request a Roblox refund online:
When reporting charges make sure to provide the following:
How to Refund Robux Within Minutes? Roblox is a global gaming platform that allows its users to design their own, as well as play a variety of different games created by other users. Robux is an in-game currency used to purchase goods on the platform.
Once you’re on the Roblox support form, you’ll see a “Contact Information” header.
After you’ve copied the item’s URL, you need to provide it in the support form.
Roblox users should always get permission from the payment account owner (their parent, guardian, or adult relative) before making any purchase. Unauthorized charges are a violation of our Terms of Use and may result in the permanent closure of the associated user account (s). Whenever possible, we work with parents and customers directly as part ...
However, some third-party payment processors require refunds to go through their support services and Roblox is unable to refund charges for those providers .