Freecharge Payment Technologies / Freecharge.in — My email was used without my consent

So far they got back to me and asked me to contact them from the email used to create the account, which I did as it was the email address where I got the successful sign up notification. I am putting pressure to them to delete my account effective immediately. It's unbelievable that some random stranger can sign up with email addresses belonging to other people without a confirmation or verification. My email being part of their system without my consent is a serious data violation and I'm ready to take this onto a further level of actions if they don't delete my account quickly.