I purchased coins in starmaker but i did not received any coins. My gcash balance was deducted how can i refund my money?

Hello edison84,

Thanks for reaching out to the Apple Support Communities. From your message we can see that you were able to complete an in-app purchase, but have not received the items purchased.

This article will give you the best troubleshooting steps to take, along with the next steps to take if you continue to have issues: Buy additional app features with in-app purchases and subscriptions. 

You'll also find this information, which applies to your situation, under "Learn more," at the bottom of the article:

"If you tried to make an in-app purchase and you aren't sure the purchase was successful, check your purchase history. If you see it in your purchase history but you don't see it in the app, contact the app developer."

All the best.