Hello, I hope you're having a lovely day. Except I do hope you can help me with a probl...

Hello, I hope you're having a lovely day. Except I do hope you can help me with a problem of mine. So, I was shopping for a Kindle Fire tablet today. And I got everything I was searching for, however, I realized I was using the wrong account halfway through the process. And I added my two Amazon Gift Cards. I'm a little frustrated that you cannot get rid of Gift Cards added to your account. I had **$ worth in Gift Cards. Except Amazon was telling me I had to add my Credit Card information to continue. Which I found irrelevant. The problem is I am not at the legal age to have a Credit Card quite yet. However, my mother has an Amazon account that has a Credit Card on it. But she obviously won't spend a whole **$ on me. Except when we try to add the Gift Cards to her account, it says, "Gift Card has been received on another account" And I am currently unaware how to remove Gift Cards. So if you could get rid of the Gift Cards on my account, that would so very, helpful. Thank you for your time and patience, have a lovely day and Happy New Year!