RBL Bank — defectible & unfair transactions on my credit card

Address:

500026

Sir,

It is to submit that I paid the bill amount of Rs.4, 360/-(as seen in the RBL bank apk) on 02/11/2019 for the month 19/09/2019 to 18/10/2019. Later, on 20.11.2019, I got to know that the bill due for the month 19/09/2019 to 18/10/2019 is Rs.4, 627/- after seeing the statement of bill for the current month i.e. 19/10/2019 to 18/11/2019. It means I paid the previous month bill with short of exactly Rs.267/-.

In current month bill statement, I noticed an unfair/defectible transactions i.e. 1) Deferred Finance Charges of Rs. 97.64/-, 2) Finance Charges of Rs.1, 487.59/- and 3. Goods & Services Tax of Rs.285.35. Immediately, when I called the RBL Credit Card customer care on[protected], they informed that charges levied was due to the non-payment of Rs.267/-, for which I paid only Rs.4, 360/- instead of Rs.4, 627/- and they informed that the above 3 unfair/defectible transactions are calculated on the total previous month bill and future purchases and future month bill and Goods & Service taxes on these all transactions.
They said that the amount Rs.4, 360/- paid is minimum due, and additionally charged total amount of RS.1, 870.58/- (unfair) for the less amount of Rs.267/-.

Hence I request the kind officials to look into this. As am using several bank credit cards since 3years but dint seen this kind o[censored]nfair/defectible transaction deductions.

regards
Raj