Standard Chartered Bank — Complaint against credit card

I'm using standard chartered Bank MANHATTAN Platinum credit card ending with **** **** **** 9315 since Nov-2013. As per my card policy if i spend more than 60000 per year, there will not be any Annual charges. I spend more than 60000 between nov-2013 and oct-2014. But in my November credit card statement issued on 4/10/14 they charged following charges.
041114 ANNUAL FEE 999.00
041114 SER TAX & CESS 12.36% 133.40
Unfortunately i didn't check the statement I paid full amount on the same statement. After one month I verified the same and I found the above charges are included in the November statement. I called customer care regarding this and she replied that, you already paid the amount so we can not refund the same amount. This is not my mistake, As per the card policy they should not charge the Annual fee the Nov statement because I spend the money as per the card policy. This is not the correct way to provide the service from a bank. Hope you will see the complaint and refund my amount ASAP.
With Regards,
AnoopSasi
Etisalat Software solution pvt Ltd,
BangaloreMob: [protected]
E-mail: [protected]@gmail.com