[unkn0wn123]

Couldn't you buy something and try to get a refund from the GC into cash? I'm trying that currently from an old GC I used, problem is I didn't spend any money on the item only used the GC. Be a useful way of getting around relatives giving you GCS for christmas who don't like giving money.

I don’t believe GCs are refundable as in they cannot be redeemed for cash once added to the account.

Well I spoke to them a bit, I bought an item with the GC I didn't add it to the account directly. So getting a refund for money might work as it's for a "faulty" item, instead of asking directly for the GC balance on the account to be sent to cash.
Hopefully it works, they're investing it due to the tricky situation.