RBL Bank — credit card blocked

I sapan kumar mandal is here by to complain that my credit card has been blocked because i didn't pay my bill for the month of may' 2017. It was blocked even without informing me. I will my bill of may and june' 2017 till 2nd august' 2017 for sure. Kindly unblock my card as i use it very often. Its not the rule of your bank that you can block my card like that without taking detail without telling me!! Unblock it so i can pay my bill on time.