Byju's — They are not responding to cancellation requests

The company salesmen Shreechandan Dash (TNL[protected] from Bhubaneswar by putting pressure and lying about the product sold us package for 84000 including 5000 in advance. The product got delivered on 11th july 2022 and I had sent a dozen of mails to their given mail for cancellation as the product is not worth its price but they are only assuring us they will do but not proceeding at all. The Mentor is not helping at all. They are ignoring by all means.