Stop Spam Phone Bills

Every Month I get an email from no-reply@vodaphone in my gmail account. The account is <firstname.lastname@gmail.com>. Neither name is particularly common, but there was a 'fashion' for the first name around the time I was born. I knew of 6 people in this city with my first & last names in the 1970s. The city only had a million or so at the time.

I never had an account with vodaphone, a poor mobile carrier IMO. I can't find a live email for vodaphone.ie to return it to.

Can someone with White/Grey/Black Hat capabilities find me a few live email addresses in vodafone.ie, please so I can start returning them? I'm pretty sure someone entered his gmail address wrong.