Recovery Agents Calling Random Friends and Family

I am dew on 3 EMIs of Paysense and these people always call my random friends, family and colleagues. They could not reach me as I had lost my contact number. Once I got to know about these calls from my relatives, I contacted them 3 months back and paid 1 installment out of 4. And I've been paying installment for last two months as well. I also informed that recovery agents to update my contact number and not to harass my friends and family. Recovery agent acknowledged the same and I thought that they would not do that again. I am again receiving calls from recovery people for the remaining 3 EMIs which is Ok as I am bound to pay that and understand the same. I informed them that I need some more time and will pay the same ASAP. However, today these people again called my relatives and started asking for money. It is very embarrassing to me and unacceptable. What I want to know is that whether these banks has an authority to call random family and friends to recover amount which was taken by me ?