New to the community? Welcome! Please read our Community Rules and Guidelines
I'm glad to hear that they provided some refund. If a case is opened with PayPal and found in your favor, you will need to return the item for a refund. While the balance would be refunded, the cost of the return would be something that would be your responsibility based on the Buyer Protection terms.
I'm sorry that you've had this experience.
PayPal reviews seller activity based mostly on the disputes that we receive. The best way to ensure that we have an accurate picture of the activity of a seller is to open a dispute. If you have already done so, that's very helpful to ensure that PayPal gets that glimpse into what's going on.