Manager told me to serve an instant resignation now they are not releasing my salary and docs

My manager creates some circumstances for me and I was threaten by my manager that's why i was not willing to work. So, I have told my manager that I wanted to leave this organisation as per the contract I have signed. When I told this that I wanted to leave the organisation. So, he started telling me that I have made mistakes and he even can terminate me. thereafter, he gave me 3 options as follow:- 1. Termination 2. Sign a bond for complete year 3. Instant Resignation When I was not ready to any of the option he was started threaten me that I was involved in unauthorized activities(without proving and without listening me) he keep started threaten me. and telling that he can make a complaint against me but they are still not doing that and giving me these options. However I make myself ready for instant resignation as I have been told by My manager and Hr that they will release my salary and documents as per the company norms and he gave me this surety verbally. I agreed and served an instant resignation. Now he is replying on my resignation that they will not release any of my dues and infact they will soon take decision to compensate the loss from me as I have not served the resignation. Kindly advise what I can do in case as my new employer wants all these documents. They are playing with my future