1) you should have served the notice period while tendering your resignation
2)did you sign the indemnity bond? what were the clauses in bond signed by you
3) it is necessary to peruse bond signed by you
4) if you fail to pay bank may take recovery proceedings against you to recover sum of rs 2 lakhs
5) if you join another bank and during verification it is found that you left your organisation without serving the notice period it would have a bearing on your career prospects
5) you would get salary for serving notice period