[Resolved]  Bajaj Allianz — ecs debit even after closure of the policy

I am gangadhar kavuri with product: bajaj allianz sarve shakti suraksha and policy no: [protected].
However owing to negative returns (Blame myself for falling prey to false promises made at the time of taking the policy 7 years ago) i closed the policy in the month of december 2017 and the amount was paid back to me in january 2018. However, again in february 2018 ecs was run and amount of 1500/- was debited.

I had contacted citibank already where they asked me to send the details to bajaj allianz office in chennai which was also done but still ecs doesn't seem to end.

Please resolve the issue.