In case you have not served notice period the company can:
1. Declare you as absconder.
2. Decline to issue any experience certificate etc.
3. Recover amount of salary due for notice period of 3 months
You must speak with management and try to solve matter amicably.
As per your submission it reveals that this is a matter of resignation without notice
Show me copy of letter which you have received and appointment letter and give me details information about the matter then we will discuss your case
You can call me for advise on