Something similar happened to me at the rather large company I used to work for. Some lass half a world away had given my email address by mistake and I was getting all her work, and some personal email (in French, which I happen to speak). At first I would forward the email and kept telling her to give out the correct address, but the bitch never replied so I stopped re-sending the emails, and started reading them instead
She even gave out the wrong email, four years latter, on her job application with a competitor--only once I decided I wasn't interested in the offer myself, I passed it on to her. She did reply to that one; that was the first, and last
time I heard from her after reading her emails for years.