NP on your TMT sets at least, if…
1. You save all you email receipt on Gmail / yahoo etc..
just find the PayPal invoice number and use contact us page
2. you have a Paypal account,then…
Go to paypal get your product invoice from your purchase history
Feel free to share your hard drive horror story via the contact page
and we’ll check what sets you have bought and save the day, well partially 😀