Account Registration Issues

Hi everyone. I hope you are all doing well. Hoping I could get some help here.

So I was setting up an account on Amazon.com seller central and when I got to the verification page, I realized that since I am in Canada, I should have just signed up through Amazon.ca so I left the page and signed up for a Canadian account.

How would I go about deleting my Amazon.com seller registration? I was worried they would start charging my credit card since I already put my billing information. (still ok verification page)

Would this affect my registration for a Canadian account too?