User Activity

I have the name of a member but not their seller ID. I do not have any item numbers for them. How can I check their feedback?
I have forgotten how to obtain contact details through Ebay for the seller of an item I have bought. Please help
Can  I do this? How?
How do we cancel a transaction. Seller had only 1 item which was listed twice by her due to a price and condition change and I have purchased this item, but pressed Buy It Now for both ads. So she will be charged for selling twice the amount she actu...
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