Axis Bank — Negative balance of savings account

In 2019 i joined a company in Hyderabad and as part of onboarding process an axis salaried account was opened in my name. Then I left the company in 2021, and been using the account frequently. Now in 2023 when i logged into my axis mobile app i can see -11, 000 as my account balance. So went to the home branch to get written off my salaried account was converted into savings account(as salary was not getting credited) and according to RBI guidelines savings account cannot be in negative.
Axis employees at the home branch are not ready to write off this amount and asking to pay 11, 000 rs. I told them about RBI guideline and they are like we don’t know anything like that.