Tata Cliq - tatacliq unauthorized account creation using my email address.

Someone used my personal email address to create an unauthorized account on tatacliq.com. Furthermore, there is no option to delete the account on their website. Customer service also confirms there is no option to delete accounts. This is unacceptable.

Chat Session with Customer Service:
Representative Chaitanya has joined the session
Welcome to Tatacliq Care. How can I help you?
Someone stole my personal information and created an account on this website. I don't see an option to delete my account.
I did not give authorization to create an account on tatacliq
Hello?
We are sorry to inform that account cannot be deleted, but however we can set the prefrences to stop the notification.
I don't believe that for a second. How did my account get created?
Please help me with registered email id.
I already set my preferences.
So just change the password, and no one can use your account.
Are we connected?
just delete my account please so I don't have to worry about unauthorized purchases.
...on my unauthorized account.
Sorry to inform that, account cannot be deleted.
You realize that I've been victimized, right?
Send me to your tech team then. They can do it.
Okay, i will forward your query to concern team.
They will get back to you with an update.
ok