In order to fix the problem of diamonds not appearing in Subway Surfers, follow these steps:
If you want to be sure the amount and date of the purchase line up with your records, you should check your purchase history to see if the transaction shows up. If the money was processed correctly, this will assist confirm.
For more personalized assistance, contact the Subway Surfers support staff directly. You can expedite the resolution process by providing the following information: your order ID, purchase date, and any pertinent screenshots.
Whether it's the Google Play Store, the Apple App Store, or your credit card company, get in touch with them if the problem continues. Outline the problem and ask for a probe into the missing payment.
If you appreciate these tips, feel free to share your thoughts in the comments.
Related Complaints
Missing Subway Surfers In-App Purchases

I've been having this really confusing problem with my son's tablet when he's playing Subway Surfers. Even though I've made in-app purchases for diamonds with my credit card, we're not seeing any credits to our account or any corresponding transactions on my credit card statement. I just can't figur...