Toothsi — Plan cancel and refund

I booked my plan last week offer for emi. After that they started telling do this do that. While doing those process my dentist said me not to undergo the process and cancel the plan. Now they are not cancelling the plan. The executive is also not responding to any msg. I don’t want to pay for any of this as I am not doing the process they will not start my treatment . Although my emi will start next month.