Bajaj Finserv — in day 25 call for payment reminder

I am a new customer of bajaj rbl super card i am using this card since 2 month they have recovery department my payment for a credit card recently i have an incident my bill generated on 14th july in a day and after that they start calling from 20th july and they said this is reminder call and they are talking like recovery call and in a day they call me more than 20 to 25 times with different numbers and they said this i said my due date is 3 rd but after that they continue trying to call and every time say that disturbing and enjoying it so plz no one plz don't take this trouble card