When did you buy?  Money back guarantee is only for 30 days!!

How did you buy? Purchases should show in ORDERS, unless you bought as a Guest in which case the confirmation email from ebay will give details https://www.ebay.co.uk/help/buying/paying-items/buying-guest?id=4035&st=3&pos=2&query=Buying%20as%20...

Why you need virtual assistant I cannot think.