HDFC Credit Card
Account settled, not received NOC!

I was using HDFC card i settled account on 30 aug still got a call from from executive regarding bal payments. I cleared my acc after discussion with executive named Shruti (Rajori Garden) she promised me that if i pay Rs 2110 (Final payment) and letter will be delivered with in 4 days, still not received.

I got documents regarding payments made.