1. Two-Hour Window: You can get a refund for digital content purchased on Google Play within 48 hours of purchase, but if the content is a digital book, you have up to 7 days from the date of purchase. However, if you're making an in-app purchase, the refund window is only two hours.
2. Automatic Refunds: Google Play Store usually automatically processes refunds if you request them within the eligible time frame.
3. Exceptional Circumstances: Google may grant refunds outside of these time frames for some digital purchases if there are extenuating circumstances, such as technical issues with the app or a fraudulent purchase.
4. Subscription Refunds: If you've subscribed to a service through an app on the Google Play Store, you can cancel the subscription at any time, but you won't be refunded for any unused portion of the subscription. However, you will continue to have access to the subscription until the end of the billing cycle.
5. Contacting Support: If you have issues with a purchase or need a refund outside of the automatic refund window, you can contact Google Play Store support for assistance.

It's important to note that physical FMCG products sold through the Google Play Store may have different refund policies, which would be outlined by the individual seller or manufacturer.

Since policies can change, I recommend checking the Google Play Store's official website or contacting their support directly for the most up-to-date information regarding refunds and returns, especially for FMCG products.