HDFC Bank — Unknown charges on Credit card names OFFUS and converted to smart emi with loan type OFF

My credit card is showing a charge: offus emi,
for INR 4541.70 and it is converted to emi for which there is charges of 199 INR. I haven't heard name OFFUS and this was not initiated by me. When I looked up on internet, I see that it's a known issue for all the customers of HDFC Bank, HDFC bank still haven't resolved it. SCAMMERS!!!

I want it to be reversed as early as possible and the emi loan has to be closed