Bajaj Finserv — fraud signature by bajaj employee on agreement and agreed upon the same recorded on call as proof

Dear mam/sir, i had applied for a loan with bajaj finance. I checked all customer feedbacks online and had asked all relevant questions with the manager. He explained all terms and conditions on call (Recorded). I was sent the loan offer through sms and was asked to accept the same asap as it was a weekend and disbursal would take time. No agreement was sent or signed. My account was opened within minutes and amount transferred. Over the weekends i found a copy of agreement and other docs uploaded by them. To my surprise the signatures were not mine and forged. Even the t&c was different than commited on call. I mmediately contacted the manager on the t&c he only kept ignoring my calls and making excuses to get back 3 days passed by. After getting in touch with legal expert, i then i happened to tell the manager of the forgery on agreements. He was scared and accepted the wrong doings on call (Recorded). I have used some portion of the loan and dont know how to go forward. I want to keep the loan as per t&c stated on call, get justice on the harassment of 5 days, bajan employees seems to be regulars on cheating and fraud so it need to stop and finally ask bajaj higher management for a written apology as there are numerous complaints on same lines and only growing.