Consumer Redressal

My son was studying in Standard II in Tagore Internation School, Vasant Vihar. I applied for TC on 30th March indicating reasons of not continuing in their school, however, they have forced me to pay Tuition fee for 2 months into the next class in lieu of giving me the TC. They quoted the school rule stated in Almanac that 2 months notice should be provided or fee must be paid in lieu of the notice period. The reason for the rule as explained by the office staff was that sudden withdrawl would lead to vacancy due to which the school will suffer. My case is that I have withdrawn my son at short notice due to issues beyond my control (my husband is in Indian Army and has a transferable job), and the withdrawal has taken place at the end of the academic session which will not impact the school as they have several students lined up for admissions. Please let me know what legal recourse do I have.