Byju's — Cancellation

I have registered for upsc course in byjus, I received the tab but it was not suitable for me so I asked for cancellation to my counseloron the 3 rd day . He called me and said he send a mail to the cancellation team and told me thet he will postpone EMI for two months so that he can exchange this course with some other student. He told there is no cancellation policy but he will try to help me. After two months I got calls from finance, then only i came to know that he didnt send any mail, he fooled me. I didnt recieved any books and send that tab back . I approached the byjus team, but they are also trying to fool me. I dont have any of their products, but I am hetting calls from financ team