Newton School is Threatening after leaving the course

I’m raging this complaint because recently I’m facing so much pressure from Newton school about a loan that I had never taken, in December 2022 I applied for admission in newton school for learning web development as per there information I had to pay monthly some amount of the fees which was okey, After my application, Newton school started classes from February 2023 with in a month I decided not to go with the course because of some family issues and I paid 2 months payment which was around Rs5114 per months (I have added screenshots ) and I mailed them on 16th march 2023 that I can not move forward with the course but suddenly they are charging me extra 20000k in the name of loan, I asked them it was not mentioned anywhere and i haven’t sign any document to approve this but still they are calling me daily and threatening me