Cinepolis India — Cancellation of Online Booked Tickets in the Given Duration

Address:

Cinepolis Guwahati, Central Mall, Gs road.

I booked 4 tickets today worth Rs. 720 today on 7 January 2021 by bookmyshow, i was supposed to book it tommorow on 8 January 2021 but i ended up paying the full amount.
When i realised my mistake, i wanted to cancel the ticket or Reschedule it, but bookmyshow executive told me there isn't any service for the same even if there was an hour to go before the movie starts.
Really disappointed with the service, Cancellation or refund is available in almost every online booking service, i lost the full amount without any refund, i tried contacting Cinepolis Guwahati, Central Mall about the same, but they said they've no say in online booking