[Resolved]  I Solution — legal notice

Today i received courier from i solution, new khirdi road, aurangabad, maharashtra 431001. This company send a legal notice by an advocate minhaz. P office 303-3rd floor, dwarkesh apartment, darji street, nanpura. Surat-394510. Gujarat ph:[protected]
So around the beginning last year, i was contacted by this person called who came up with this proposition to be able to earn ₹22, 500 in 10 days by solving 10, 000 captcha with an accuracy of 90%. She also laid the condition that if could not complete the task, i would have to pay them ₹5000 from my earnings. I was in need of money at that time.
A couple days later the app that they had asked me to download, the one on which i was supposed to work, was crashing. I called their helpline but it was always out of coverage. But i did day & night and completed my work. But later on last day they said i failed. & started making calls from unknown number daily while mailing legal notice only once. Later i found on website of consumer complaints & various youtube videos that many people fell for same trap.& many even paid.

On 10th day i received call that i have to pay penalty charge or saying that if i didn`t want be booked for breach of contract, i should contact the given number. The number, when i checked on truecaller said "fraud bewra of captcha". I didn`t response few calls later made by them as online videos on youtube as well as sites for complaints shown same things happened to others by which people who gave money now were recovering that money back as it was fraud.
Approximately after one year now i`m getting legal notice from advocate minhaz p out of nowhere. No calls no emails for 1 year.

I need help to get this complaint resolved as soon as possible at once. I haven`t paid single rupee to them till now. I need help to get rid of this issue as i`m having a lot of financial crisis going on in life & i don`t want mental torture, harassment.
Please help me to resolve this issue