Have you had this happen with Amazon?

I can get into my account no problem, but when I go to check out it sends a link to my cell phone.
This is a problem I have a flip phone with zero data, and there it stops.
I have to tried to get a hold of customer support that is a joke in it self trying to talk to a human ,I think it would be easier winning the lottery.
Is there a way around this?
I would love a helpful answer before a mod gives me a lesson in writing.