eBay

I sold an item and I sent a wrong one so I sent the right item, it it came back unbelievable from post office I reshipped it with a new address it came back refused that's twice I paid shipping to the same item I refunded the cost of the item is that...

How do i put someone on a list to stop from bidding on my items 

My all selling page is in small print and i cant see it, also i went to change the weight on an item i was shipping and it wont let me