I lodged a dispute with Paypal when an item hadn't arrived after one month. Unfortunately I was the only bidder. The item was a jar of facecream with "free postage". A couple of days later I received a card from the local Post Office that an item was awaiting collection , but with money to pay for insufficient postage and penalties. The item awaiting collection was the jar of facecream, posted in a reused envelope from a Government Dept, bearing two sticky-taped stamps which appear to have been reused as the postmark is only on the stamps and doesn't extend onto the envelope. I had to pay $6.90 for insufficient postage and penalties. I changed the dispute to "item not as described" because it was described as "free postage", but I don't seem to be able to change the amount sought to be refunded - I'm asking for the seller to refund the $6.90, not the $10 paid for the facecream which I have received.
I would be grateful if someone would tell me how to go about contacting PayPal to change the aount of the claim.