I had been working as a teacher in a public school in Delhi since 1999. I worked on an ad-hoc basis for 2 years, i.e., 1999-2001, and then got probation in 2001. I resigned last year, and the 3-month notice period ended in the first week of November 2011. I submitted the gratuity form then and later an application as a reminder. However, the school authorities have not yet given me the gratuity amount. What should I do now?