Flipkart — Account Email reset

I registered my Flipkart account with my phone number and later added a email. Now as I don't have access to that email, I want to remove it and change to another.
As of now flipkart sends otp to phone number(I got it) and the inaccessible email from flipkart which I am unable to retrieve the email otp. I don't want to deactivate my account as I have supercoins that I earned over the year to vanish. How am I supposed reset my email by only registered sms, without access to current email?