actually when u opt for premium service for the 1st time, they will deduct immediately 199/- upfront. and if you cancel within 30days of activation, they will refund the full.
if you continue for 2nd month u have to pay nothing. But if you decided to cancel the subscription within 30th day to 60th days of subscription, then they will refund the unused amount.
earlier, when we opt for premium service, there will be no deduction for 1st month only Payment details have to given but now they charged 1st and if anyone cancel within 1 month then they will refund the whole amount.
Hope I am right.
also, It is advisable that u pay for hotstar premium with DEBIT CARD as it auto-charges your Credit cards/Paytm Wallet after the end of the current plan..