They are scammers

I have never visited their site and yet today I got an email from them saying ‘welcome to this site’ they also sent a support id and pw but, as I didn’t create the account, I can’t login to delete the account. I’ve written to them telling them to delete the ac NOW but nothing so far. Reputable companies confirm subscriptions before creating accounts but not this mob so I assume they either created it on purpose (so they are scammers) or some idiot put the wrong email address in and this site doesn’t confirm before creating accounts !