School charged fees for the whole month and then issued transfer

School in dwarka Delhi prepared the T.C on 8th April 2017 but till I paid cash of rs 5730/- on 11 th April 2017 they did not issued the T.C as claimed by them that without the April mo ths fees they will not issue the certificate . I gave them the application for school leaving certificate on 1st April 2017 but they took whole months fees including annual charges , development charges . I requested them to not charge me anything as I have discontinued using their services from 1st April but they forced me to pay as they told without paying they will not issue the certificate and they did exactly the same once i paid them then only they issued the certificate. I informed them I am not availing any service from the day I have given the letter I.e. from 1st April but they forced me to pay and after paying cash on 11 th April the certificate was issued to me. Is there any way that I can get my money back along with compensation for the mental trauma they have given me. If there is a way kindly let me know. Thanks Ajay Jha