RBL Bank — closed my credit card - they kept it live & send me yearly charges bill & charging interest every month

Address:	Gurgaon, Haryana, 122001
Website:	cards.rblbank.com

I closed my rbl credit card last year on 29/03/2016 by making my final payment of inr 61, 000.00 but after an year they sent mr sms of yearly charge & after that i called customer care where i was told it was by mistake but now its second month they are sending me sms with interest cahrged on it foe past two months.

I destroyed my card & asked to block it then how can they torture me with this.