I got a package today but didn't order anything. What to do?

[agadora]

I got a package from ebay today, it was sent by the global shipping programme, so I don't know who the seller is. It's a pair of trousers in my size so I'm asuming its from a previoust seller who mislabled the package. 

How do I find out to whom to send it back?

[john1297576]

If it is Global Shipping, then they labelled it NOT THE SELLER.

I cannot imagine how they could send to you, is it addressed by name?

You could try contacting Global, but I expect that could prove difficult. Best to keep and see if anyone contacts you.

If not addressed to you, you could put back in post marked "Not Known at this address".

[agadora]

It's addressed to me.
I contacted a seller I bought trousers some time ago, since its the only "usual suspect" I can think of. We'll see.
Thank you!