Standard Chartered - Credit Card
Account closure problem

I had taken a Balance Transfer EMI loan on 6 installments from Standard Chartered Credit Card.

I had made a payment of Rs. 14137 on 11th July for my card towards the closure of my Balance Transfer EMI account. I had called the helpdesk to confirm the same. I was told that it will be closed within 3 working days. But today I see another EMI being charged, instead of me making an advance payment last month. Today I spoke to your Executive by name "Richard" who was very rude in answering my request. I was in a shock to know that my account is still not closed.