Cashe — Defamation and Harassment by collection Telecallers

Hi,
I have had multiple loans from Cashe in last 2-3 years and always repaid them in time. However during lockdown last year, I lost my job and failed to fulfill my obligations and could not pay last 3 EMIs worth 30000.
I am still to get a job and have written them multiple times for a settlement offer but they never responded.
In stead they regularly call people from my phone's contact list and abuse them. They convince them falsely that I had given thier names as reference while taking the loan. They are defaming me among my friends & relatives.
Please tell me what should I do.
[protected] Most of the calls are made by this number to declare me defaulter and abuse my friends. I have multiple call recordings.