User Activity

I bought an item with free delivery from seller. The seller did not pay the right postage. Royal mail put card through door saying I had to pay the fee before they will deliver. I have contacted the seller who is not answering me ex
Hi I sold a pair of beats earphones. Buyer left great feedback. After a month asked for a refund said they stopped working. Where do I stand in this situation. They were in perfect working condition when sold.