HDFC Bank — Without asking my permission one assist took 4000+Gst from my account as renewal charges which was cancelled 4 years ago

One assist as took a renewal payment of rs. 2000/- from my account in 2016, which was cancelled by me within a week along with the membership. Suddenly after 4 years, in October 2020 in this pandemic situation, without giving prior notice they took 1000+2999+GST from my credit card. When I contacted the customer care, they are stating the membership was took in 2016 for 2 years.They didn't contacted me in 2018 about this, suddenly they used my credit card without my permission.It's almost a week now, no one is responded to my query. One assist used my card without my knowledge then how come they give protection.
When I contacted the HDFC Bank, they are informing, one assist can cancel and I can question only one assist. Asking me to file a complaint in -person to the Bank branch .From Bank side also I didn't get any help till now.
One Assist and Hdfc Bank cheated money from me in this Pandemic situation