Recovery agent harrassment

I have taken a personal loan from Kotak Mahindra Bank in July last year. I have been paying for the EMI for the Same regularly.. however due to health issues related to pregnancy I had to quit my job and for the last 3months have defaulted the payments. I have however been in touch with the bank representatives and kept them in the loop about the situation. I delivered a baby boy in April and since I did not have a job and due to complications in pregnancy had to undergo a c section and incur an expense of nearly 2.5 lakh which worsened my situation further On 6th June 2019 ok recieved WhatsApp message from a recovery agent with a photograph of my details asking me not to "play" with the bank. I replied to him that I am trying to arrange funds and will try to make payments as soon as possible On 11th June 2019 at around 2.30 pm I recieved call from the same person. When I informed him that I have still not be n able to manage the he funds he began to abuse me on a personal level stating that " if you cannot repay then why did you borrow ... It is not your father's money".. I informed him that I would not be able to pay right away and disconnected the cal but he continued to call me multiple times.. I handed the phone to my father who was also abused by this person post which my husband answered the call and his abuses just got worse. He even went to the extent of saying that he would bring some people to my home and "pick up'" whatever is available and me also along with that.my husband in his anger told him to bring 20 people along so that he can collect everything.. and this person has the audacity of saying " your wife needs 20 people to f@#k her? And starts laughing I asked him for the address of his office and he said that he works out of the 3rd floor of the Kotak Mahindra Bank office @ Trinity Circle Bangalore. In the midst another person who said that his name is Rakesh and said that he was the manager of the collections department came on the phone and I explained the scenario to him.. he also confirmed the same address details.. I asked him for his mobile number and he gave me a number which was incorrect when I called back I called back on the collections agents number and was given a different number of a person named Ajith who is the manager My husband , his cousin and I visited he branch to meet Ajith who asked me to call him from our number. He spoke to the person and when he asked him to come to the reception the person switched ok f his mobile Ajith informed me that he would need time to find out who this person is. He said that the number from which I have received this call is not registered with the bank yet and I would like to know what I should do. I don't feel safe as I feel that the person may call harras me further ..