How do i cancel a transaction in eBay?

I recently bought something on Ebay through a guest account and a guest paypal account. I then recieved a confirmation email, however realised that I would not recieve the item in time. How can I cancel my transaction if I cannot sign back into the guest...

I sold something on ebay, but the person is from another country. it was stated in my listing that i do not ship outside of the US. I messaged them about this and they said sorry they didnt see it. My question is, how do i cancel this? Because i know...

I just won an auction on Ebay and me and the seller already agreed to cancel the transaction. But how do I do this?

I received an email of a person who accidentally bought one of my books and he wants to cancel the transaction but I don't know how to do it.

i accidentally pressed credit card on ebay and i dont no how to pay for it, i need to cancel it please help

I would like to know what this transaction was for and what card it was charged to

i changed my mind a little too late i think. is there anything i can do?

Will they automatically refund it on my paypal? Is that all i can do? Just left a message?

I'm due a refund for a laptop that I bought from a drop shipper using buy it now, but turned out it wasn't in stock. seller jerked me around for a week and finally i got fed up with it and said i want a refund or a better laptop immediately or i'll file...