User Activity

Can I check back a few months to an item I was bidding on?
I am so annoyed! I have listed lots of items over this last month as i was notified that i could list up to 100 items for free and would only be charged if i sold them, when i listed them it also said free and yet i have been charged for most of them...
A buyer bought an item from me and i wanted to leave feedback, she has no items for sale and although it says she has feedback nothing is visible, i have never come across this before, does anyone know the reason why feedback can't be seen? Thanks
I have bought 2 items from seller and asked for combined postage, they haven't answered since yesterday, do you have to give combined postage?