Kotak Mahindra Bank — poking for unnecessary credit card charges

Address:

New Delhi, Delhi, 110052

Sir,
We have taken credit card of kotak mahindra long back on name of mrs. Jyoti gupta holding card no xxxx xxxx xxxx 5073 once the card payment made to them was not shown in their a/c then they have imposed interest on the payment which was actually not due from our side then we have given them proof of doing payment on time and they were found guilty but they have not reversed the interest imposed on the payment which was not actually due. We have sent several reminders through mails to waive off the same. Everytime they said that they will update the matter and will send settlement letter but no letter has come from their side. Also they have imposed annual charges in return of which we have asked them to close our card and requested again & again to close the matter but they have not taken action and even started harassing us. They came to home and behaving ill mannered. They are forcing us to make unnecessarily annual charges & interest which we are owe and even after so many reminders not closing the card. I want you to take urgent necessary action on them for threatening and not closing the card even on our so many requests.