Abuse of Email Address

Hi,

Over the past years someone in another country has been using my email address to sign up various newsletters and subscriptions in her country. She did not hack into my email account, just use my email address to sign up. Apparently she has the same first and last name as me, but different middle name. 

What at can I do about this? I'm tired of keep unsubscribe and writing to those senders asking to remove my email address from their mailing list.