Byju's — Cancel our order

We've been trying to contact byjus from past few days but they're not showing any sought of response..we just want to cancel our order..and cancelling is only possible within 14. Days we just have 2 days left..when we call to the customer care they said we will be getting cancellation call within 74 hrs..we didn't get any call!!!..I request to pls solve our problem as quickly as possible as we have only 2 days time left