CAR LOAN — foreclosure

I had a car loan no:LACHE[protected] and had sanctioned for a term of five years and the loan amount was three lakhs.On completion of approx two and half years of repayment by EMI, had approached icici bank santhome for foreclosure on 22nd of SEP and was intimated the existing amt is Rs:152, 959.55, the said amt was arranged and as i was working at out station had authorised my father for foreclosure.Subsequently on approaching on 29th sep the quoted amt was not accepted instead it was told one more due to be paid as on 1st OCT.Then it was requested to accept the said amt and the foreclosure to be done after deduction of one more installement as the indicated amount only was brought .However it was categorically rejected saying ther is no part payment mode in car loans which was suprising as it was brought to our notice only then.Moreover once the said amount for foreclosure was being paid it was not understood why this was considered as a part payment.My father was told to meet the customer care staff in the santhome branch and it was in vain and wastage of more then an hour as he was directed from one table to other and for most of the staff it was like an information that part payment mode not existing in the case of car loan, but no solution neither assistance was extended on this issue.Therafter forclosure was accepted on 03rd OCT and was assured receipt of NOC in 10 days which is yet to be received, would appreciate early receipt of NOC.