Superannuation - Offer Letters

I joined a company seven years back.
Before issuing appointmnt letter, company had sent me an offer letter in which my monthly CTC was calculated and superannuation amount was shown as part of ctc.
I joined the company and after seven year when I am leaving the company , I am told that as per company rules superannuation will be paid on completion of 10 years of service.
I have the offer letter shows superannuation as part of my monthly ctc.
Can any body advise what should i do.

hello friends,
can any one please solve this problem?
40 crores of deposit.
14% customer paid interest.
NPA 20crs
monthly rented 20 crores
18% lended interest
monthly deposit 1 crore?
so what it the next month prediction?
please answer me as soon as possilbe..
and i had entered this question in suggestion box so sorry for that, because i dont know how to enter a question in mail format,.......
and please provide me the answer as soon as possible....
thanking you
regards
madhu...............