How do i get a refund of cash in my account ?

If you mean store credit on your account?

You might not be able to.

You can:

Contact Apple for support and service - Apple Support

And check.

If you mean a refund for a purchase:

You can request a refund by following the steps in this guide:

Request a refund for apps or content that you bought from Apple - Apple Support

You are not guaranteed a refund tough.

This is an automated prosess, if you wish to explain your situation in depth to a person you can:

Contact Apple for support and service - Apple Support

Also see this:

How long refunds from the App Store or other Apple services take - Apple Support

Good luck!

Roof rash Said:

“How do i get a refund of cash in my account ?”

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Credit for Returns is Not Instantaneous:

Have you already returned this? If so, note that getting credit back is not instantaneous to performing a return. So, you have to just wait it out.