Byjus — not refunding amount of 27000 inr

Dear sir/ madam, we need your help. I am sanjay shukla, father of aaryansh shukla want to share my concerns. Byju's agent mr. Sanjay (Mobile no.[[protected]] approached us and we bought byju package for our son for class 4th paying a amount of rs. (27000/). At the time of deal, we were said that if you don't find our product satisfied, you can return it within 15 days and the amount will be refunded. After receiving the package, my son studied from for about 12 days and he wasn't satisfied at all. We called the same person (Sanjay) about returning the product. He told the period of 15 days over so now returning not possible basically before 15 th day i called him but 2nd october holiday so byjus not working next day he told tomorrow he will respond but later he closed 15 days over. We even approached their customer care but didn't got any sufficient response. It is my request to please solve our issue. Dr sanjay [protected]