Byju's — No services rendered even after full payment

I'm a class 12 student who enrolled in BYJU'S online NEET batch in class 11 for academic years[protected]. Since October classes are offline, their helpline and customer care numbers are unresponsive. Full fees has been paid, but services have not been provided. Printed books have been paid for, but undelivered till date, and they say it's complementary, we don't have resources at the moment to print and send. Now my exam sare approaching and I'm feeling nervous. Can someone please help me out. Probably try to get us a refund because I come from a poor background. I have the receipts of fees payment and also the bank statements