Flipkart — OTP login unavailable

Address:

Flipkart Internet Private Limited, Buildings Alyssa, Begonia & Clove Embassy Tech Village, Outer Ring Road, Devarabeesanahalli Village, Bengaluru,

Issue:
I tried to re activate my flipkart account by login through website, after entering my mobile number or email id it is showing (OTP login unavailable, contact customer care).

failed attempts.
1. visited customer help center page in website it is showing login to contact us (cannot login because that's the issue).
2. couldn't give call back request from my friends account it is showing all channels are busy
3. called customer toll free number[protected],[protected] and tried to contact, there it is saying all our executives are busy please contact through website or app later. this happened more than 100 times for the last 40 days Dec 10, 2022 to Jan 22, 2023.

help need:

to re activate my account, download some invoice, cancel my pay later account.