Bajaj Finserv — card blocked, harassed by customer executive

My mother is having a bajaj emi card somehow her registered no is blocked and wanted to update with a new one. Since my mother is quite agate so she was assisted by my wife (Rupinder barman). After calling several time and humiliated by bajaj executive our problem got solved. We made a transaction in flipkart using bajaj card which was successfull then but today it was cancelled and the card was blocked by bajaj. Again we had to call the very illiterate and uncivilized customer care and it was informed that the card is permanently blocked. We have provided all the details but it seem that the all the executive were raging with us asif they hav found a new comer in the college and started diturbing. What kind of scr they offer, are they take the calls to harass and increase the problem or to solve the issue. It was pathetic. Flipkart offer will last today then there will be no use. There is already a emi of a laptop is going on which is not yet over. So if they think that there is any suspicious thing happening by our end and blocked the card the it will be useless to pay the remaining outstanding and let the court of law decides the right judgement because we do have all the call records and necessary evidence.

Details are as follows:-
Customer name : nirabati barman
Address:- 90/7 kedar nath singh road, ariadaha kolkata - 700057
Old mobile no:- [protected]
New mobile no:- [protected]
Pleas find the attachment

Thanks
Rupinder barman (On behalf of my mother nirabati barman)