Consumer Redressal

Against:-Ducat,Noida I paid Rs17000 to learn Java but when i entered there Java teacher told me i'm not eligible to learn Java because i'm from commerce background so i had to migrate to their PHP course which is of Rs13000, now i have completed my PHP course but they ain't refunding my amount left (Rs 4000). They are saying you have to do any course from us if you want to use this money else this money would be counted as your PHP course fees.They told me we won't refund money but the problem was arisen beacuse of them if they would have told me before collecting payment that i'm not elible for JAVA then i would not have paid the amonut. Please help me i want my money back.