Standard Chartered Bank — Irrelevant interest charges are added every month to my credit card, since 6 months

Address:

560037

In the month of Jul-2015 statement, Interest was charged to my credit card, which was Irrelevant. I informed the same to customer care executives, Nodal officer and Principal Nodal officer, but there is no response at all. Even I have sent many emails but there was no reply at all. From past 6 months Irrelevant Interest charges are added to my credit card account. I am sending emails almost every month since then but there is no reply at all..Please resolve this is as high priority.