A friend has lived at his apartment for over three years. In the last few months, he's started getting a lot of post for someone else at the same address, although he is the only occupant.
The post is all from a bank and the name to whom it is addressed seems of eastern European origin. He doesn't know anyone from that part of the world. The addressee is not the former occupant either.
So far he's returned the post with Not Known At This Address but the letters from the bank keep coming. He's a tad suspicious of it too although presumably, if it is a genuine mistake, it takes a while for the automated mailing system to catch up