Mobile Number — To change mobile number for Flipcart

Address:

PAN Oasis, Flat No: S-601, Sector 70, Noida

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.
Please do suggest me to update my new mobile number to my flipkart account. my registered email id is [protected]@yahoo.co.in,
mobile - [protected]