Kotak Mahindra Bank — Mental harassment-Credit card Recovery

From past one month I am harrased by the recovery agent of Kotak cards.
If my husband is unable to answer his call, then he starts calling me and talks in very abusive language.
When I politely told him that im separated from my husband and do not harass me for his dues, then he went ahead and called up the CEO of my company and further calling up the management.
They recovery agents are ill mannered and uneducated that they do not know how to talk to a lady.
Further he calls me at 11:45 pm in night which is actually not appropriate.

Kotak cards is actually loosing its name due to such holligans.

This is a serious concern and need to take legal action against kotak bank now.