Axis Bank — EMI transaction not converted & late fee charge

This is with reference to the transaction ambiguity in Axis bank limited,
Actually we have done Two transaction done on08.07.2020 each of Rs 32011.
These Transaction is of EMI.
but still these transaction is add in my statement, then afterwards i have contacted to axis bank customer care, They said that your transaction is converted in to EMI on dated 24th july'2020.& you have to pay only Rs2300.88 .
Now we have have paid Rs 2300.88 on dated 30.07.2020.

But still we are getting voice call & reminders taht your overdue is pending and please pay to continue services.
Also they have charged me late payment fee of Rs 700/- without intimation.
How this type of activity done by Axis bank, This is very ridiculous.
Kindly look in to the matter & provide my refund and also clarify the EMI of above said transaction.
My last digit of Credit card xxxxxxxx9516

Regards
rahul Singh