Byjus — Not giving refund

Website: byjus.com

I have only paid registration fees of 7000 to byjus which I requested cancellation for within 2 days of payment which comes under there 15 days 100% refund policy( I'll provide a screenshot as proof) but still they are not giving my refund It's been more than a month they are not responding to my emails and not arranging calls either. and once they said they will charge 3000 as process fees which is completely against their own refund policy.