Refund appeal

My 6 year old daughter accientally purchased 10,000 ROBUX points (cost £99.99) for the Roblox game on my XBOX ONE which is connected to my paypal account.

Obviously she didnt realise she had done it at the time and when the money had been taken from my bank account a few days later i immediately contacted Microsoft and began the refund process.

Microsoft swiftly answered stating a refund was unavailable as 'part or all of the purchased points had been redeemed'

I re-installed the ROBLOX game to check if this was the case and found the ROBUX points balance to still be 10,000.

I have attempted to follow the refund procedure again but each time im being told the refund request has been answered/completed and am unable to progress any further.

Any ideas?

Anyone have a direct email to microsoft customer services?

Any help / advice greatly appreciated.

:)