Want to delete own created yahoo group

Hello All,

I had created a yahoo group on yahoo India since few months ago by my company name. But, now I have lost my password. I am getting mails from the members who have joined my group. So, my boss is saying these mails are disturbing the name of our company. I want to delete this group. So that I wont get these unwanted mails. Or how can I overcome from this problem. I have contacted to yahoo customer care, they are saying there is no other way as you lost your password. Also, I don't remember the basic info that I filled at the time of creating account. Please help me.