You need to let other members know what happened if you would like us to try to help you
But to answer the actual question you wrote in the heading
very easily
You would'nt have needed to open it
You could have
refused to collect it/accept it
Written return to sender on the unopened package
Written not known / no such person at this address on the unopened package
Someone else who lives at the address could have returned it
We are'nt mind readers and have no idea what happened
Did you need to open a dispute for something?
Did you have a case open and eBay closed it in your favour and refunded you?
Did the seller say you returned an incorrect item to them?
Please elaborate on what you mean