I entered my credit card info to order a kit before I realized I could order with free shipping on Amazon. Without me giving permission, they kept my credit card info. You cannot delete it. So, I did online chat. They said I can't delete it to protect my account (?) so I have to call. I called and they said they can't do it, I have to email. I emailed, they replied from another address saying "let us know if you still need assistance" when I replied, they told me I have to email the original address I had just emailed.
The customer service rep told me even if you delete your account entirely, they don't remove your info.
There seems to be nothing I can do except get a new credit card.