Visa has got two goods offers on its credit/prepaid cards for free Spotify and BB Star subscriptions. Here are the details:
3 Months Spotify Premium Offer on Visa Cards

This is available only if you have not availed of any form of Spotify premium subscription (trial or otherwise) earlier.
The free subscription is valid for three months. We need to provide our credit card during sign up but we can cancel anytime before the trial period ends so that we are not charged the monthly billing.
This offer is valid till 26th October 2022.
6 Months BB Star Offer on Visa Platinum Prepaid Cards

The BB Star subscription offer is valid only on Visa Prepaid cards like Uni and Slice cards.
On availing of the offer, we get a coupon code that can be used on Big Basket’s site to redeem the subscription.
This offer is valid till 31st March 2022
How to Avail
The Spotify Premium and BB Star offers are valid on selected variants of Visa cards. So, to get the required offers we need to validate our Visa credit numbers by clicking on the offer link. Visa will charge Rs 1/Rs 2 on the cards for validation. This is reversed immediately after validation.
In case of Spotify Premium, do remember the cancel the subscription before 3 months to avoid an auto-debit on your card once trial is over.