Yes Bank — fictitious and unjustifiable charges on my credit card

Address:

Dehradun, Uttarakhand, 248001

Sir,
Sir i am the user of yes bank credit card from the last four months. Last month i got a two or three times call from their customer care regarding conversion of my two transaction done on 18/4/19 and 21/04/19 to monthly emi. Amount is not so big so i rejected but they call again and again and at last i became agree too because it seems to be profitable but they do not give me any documentary proof regarding my emi amount and the total amount which i have to pay to them. Even i donot know how much amount i have to pay to them that month i wait for their intimation regarding conversion of monthly charges into emi through mail or through sms and the exact amount which i have to pay. I got this emi conversion call near about on 29.05.2019 and due date for monthly statement is 4/06/2019. I think yes bank being a private and professional bank too very clearly handle this situation without bothering me too much but up to 2nd may they don't give me any intimation regarding the emis.
Unfortunately on 04.06.2019 some casualty happens in my family and i forget all this. At last on 07.06.2019 i call them to know the amount which i have to pay them i shock to know they have not convert my monthly statement to monthly emis and they are charging the below amount from me bogously
Late payment charges=500
Finance charges = 225
Finance charges=172
Goods and service tax gst @ 18%=184
Total =1081
Due to non availability of credit statement and mistakes from the yes bank i am not able to pay my bill on time. Instead of apologizing on the incident they are charging bogus and fictitious charges from me on name of late payment, finance charges and gst. They are charging an amount of rs 1081 as fine for late payment of 3 days
I request you to kindly help me to waive off from this amount as this unjustifiable
Regards
Neeraj kumar singh
Credit card no [protected]
Email id [protected]@gmail.com