Postpe — Harassment from postpe collection agent

I have taken a loan from Postpe card, but since 1 months I am not able to pay the EMI or amount due to financial issues & i lost job due to layoff my F & F not been completed from company. so i have talked with postpe team on as well as o whatsapp massage/ call.But from last 2 days the collection agents of postpe is calling on my relative numbers as well as on my colleagues number for my repayment and using abusing language so I had sent an e-mail to nodal officer of postpe regarding the same in last month and they reverted that the numbers are not belongs to them and again i have sent email before 1 days so they says that numbers are not belongs to us but today I have received a call from same number on my mobile which number is provided by my relative.It means postpe team is lying and harressing my relatives for my repayment so i have already informed him that now I am not going to pay single amount because of this haressement.So please help me because I am receiving calls from my relatives since a month regarding this matter.They are spoiling my image