Unlimited Steam Gift Cards Refund Trick

  1. Go to https://www.g2a.com/

  2. Buy the Steam gift card of your choice and buy it normally.

  3. After you buy the gift card, redeem it on your Steam account and make a new one.

  4. Make a ticket on G2A that your Steam gift card is already used.

  5. Then, they will ask you for a screenshot from Licenses and product key activation. Go to your second account and take the screenshot.

  6. They will ask you if you want a refund or a replacement. You can request a replacement, but I think a refund is better as you can do this method multiple times on different accounts.