Releaving Letter

I was working in a company,contractual basis. i had resigned from that company
without serving notice period due to some critical reasons & now i am in need
of my re-leaving letter from that employer ,I am in ready to pay one month
salary in lieu of notice period as per the contract but they are clearly refusing
to provide me that letter.
Kindly help me

Did you hand over the responsibilities/company assets/documents properly? Talk to your immediate boss and explain the ground realities for leaving without serving N.Period. May be on humanaterian grounds, your request considered for issuance of relieving letter. Bear in mind that N.Period is meant for smooth transition (the term applies including finding an alternative) and if we are not honouring the basic principles of N.Period clause, employer may refuse to issue the exit formalities.
Pon

In my case my immediate boss is not understanding the situation & refuses to complete exit formalities.
I am trying to convince him even i am ready to pay one month salary in lieu of the notice but nothing works.
Kindly tell me what steps should i take in order to get my releaving letter.