Is there any way to restrict for Subscription refund request if user already used the service?

Hello,

Our application operates on a service-based model with a subscription system.

We've noticed that some users have subscribed to our service, utilized it, and then requested a refund from Apple. However, we have already incurred charges from our vendors for the services utilized by these users.

We are exploring options to prevent users from requesting refunds for subscriptions after utilizing our services. Is there any mechanism or strategy available to prevent users from obtaining refunds for subscriptions once they have utilized the service?

Your assistance in this matter would be greatly appreciated.

Thank you.