Flipkart — Merge accounts

I have created flipkart account few years back with a mobile number few months ago i lost my mobile phone and the number.

The main problem is when i tried to update my new mobile number, the otps are being sent to both the new number and the old number. I got the new number otp and account password, but the otp of the old number cannot be entered as i lost the number and i dont have it. This is making me unable to change the mobile number.
Then I created another flipkart account with my new number and another new mail id.
Please do suggest me to update my new mobile number with my old email id to my flipkart account.