Dispute an unauthorized gift transaction on PayPal by visiting the Resolution Center and opening a dispute.
Visit the Resolution Center by logging in to PayPal and clicking the Resolution Center link in the menu.
Click the Dispute a Transaction button.
Select the transaction you did not authorize by clicking the radio box next to it. Click the Continue button to proceed to the next page.
Select Unauthorized Transaction and click the Continue button. On the next page, click Continue.
Provide PayPal with an accurate and complete description of your claim by filling in the form. Click the Continue button and on the next page confirm your dispute. After receiving your claim, PayPal reviews the information you supplied and decides whether to grant you a full refund. The company informs you of its decision by email.