Kotak Mahindra Bank — abusive calls from their recovery agents

Address:

400101

We have taken a pl from citi finance bank of 24 k in 2006 for 24 moths after that we have paid 16 emi's citi finance was permanently closed we have reach to them to pay the emi's in their office but their officer doesn't take the emi they telling the bank was officially closed.
So many years later the kotak mahindra bank was calling for that remaining emi's & calling abusive to me, my wife & my children, they doesn't have manners that how to talk gently now we are frustrated from their bad communication.