HDFC Bank — hdfc bank wrong charge to hdfc credit card - offus emi + payment of minimum due attracts interest!

1. My credit card is showing a charge: 23/08/2020 offus emi, prin nb:05, [protected] (Ref# 09999999980823003597669) for 3, 811.20. There is another charge for 1, 373.11.

Other charges as follows:
23/08/2020 offus emi, prin nb:02, [protected] (Ref# 09999999980823003597685) 1, 373.11
23/08/2020 offus emi, int nbr:05, [protected] (Ref# 09999999980823003597677) 328.36
23/08/2020 offus emi, int nbr:02, [protected] (Ref# 09999999980823003597693) 194.12

What is this charge? I want this to be reversed.

2. Apart from the above, i always used to pay the minimum balance due. It was never made clear that minimum balance due will attract interest. This is a very deceptive manner of charging interest. It should have been made clear that minimum due will only ensure that penal charges arent levied but interest is. High interest rate itself is a charge.

How can such deceptive practice be carried out? I want these charges reversed.