Resignation With Out Appointment Letter With 3 Months Of Joining

Dear sir,
I have rejoined a textile company.
After a joining on 27/11/13, i have received an offer letter in which it was mentioned the date of joining, and a clause in which it was mentioned that " i fail to join then on or before 2nd December a handsome amt, i have to pay to company.".
As i have resign on 28th of February'14. They are demanding 3 months notice period Money = 102,000/-
Or they will file Fir.
But they are not in mood to clear me. Not ready to give me my original appointment letter??
Pls. Guide me.
Anurag Chaturvedi

Hi Anurag,
some questions:
Have you signed an appointment letter where these clauses are clearly stated?
What is your correct date of joining? Is this mentioned in the letter?
Have you given a formal letter of resignation? Why do you not serve the notice period?
What is the amount you have to pay? Is this mentioned in the appointment letter?
Regards
Ryan

Dear Anurag,
Need to understand more details. Pls share portion of the letter you received to understand exact meaning of the clauses mentioned.
Normally, the probation period is considered as 6 months to 1 year - needs to be mentioned explicitly in Appointment Letter.
You may ask for the Full and Final settlement copy which will give you break up of amount you need to pay to company.
Suggestion - send a month's basic salary along with your resignation letter by registered post and wait for their response. You will be happily surprised.
Regards,
Shashank