Bajaj Finserv — my missed out emi issues. unknown lawyer threatening me

Address:	600073
Website:	bajaj fin serv

Hey, vignesh here.

I bought more than 8 products from my nearest retail store chennai - tamilnadu, using the bajaj finserv emi option. We used to pay the finance using my father account. Due to some financial issues we left my father's bank account as it is. After 1 year i received a call from an unknown lawyer who doesn't even know what i paid. He just wanted to file a case on behalf of the bajaj finserv. Later on checking the account i can see that we have missed out 3 emi for the some stabilizer 850 rs each month. I'm now ready to pay the missed out emi in total the lawyer want me to pay 15000 rs where the left out emi are just 830*3 months 2490 rs. This ransom amount is not possible for middle class men to pay. I understand i'm liable to pay some dishonor charge but bajaj should called me right or should have emailed me about the charge or at-least they should have sent some one to my current address about the charge reference. Also the lawyer is not even kind enough to explain or to check the details of the loan. He threatened me to pay the whole amount.

Please help me to clear this issue

My loan account number is : 4030vs17201386
Chennai tamil nadu

Tambaram east