HP Laptop DV2000
After foreclosing loan still ECS is getting debited from my a/c

I took a lona from Bajaj Auto Finance. Last month on 15 Feb I issued a cheque in their Punjabi Bagh Branch for foreclosure of my loan A/c. They told me to give a cheque of Rs. 8169/= which I did. After that they tolld me that they will cancel the ECS of my loan a/c. After that this month on 12/03/09 they took the payment of Rs. 1858/= again. I called so many times in their Delhi Punjabi bagh branch but all is in vain.