RBL Bank — Wrong addition of membership charges

These people have blocked my credit card since last 4 months without even taking my permission.
And now suddenly they have charged me around 1200 as a membership charges.
Initiall they didn’t mentioned anything about membership on my card but now they are charging again.
After compiling on twitter they said that they will cancel my card and waive of the membership fee.. but now they are denying it.. just because they blocked my card without asking me I was unable to use and suddenly after 4 months they sent a bill for 1178 approximate..
My registered number was [protected] but now my number is [protected] because that number is not in use

Service request number : 49460387