I just left Amazon after working there for a couple of years because this is how they treat everyone: customers, contractors, employees, etc. They only care about themselves and how much money they make. They are the most stingy, selfish, and disrespectful company I've ever worked for. Glad to have them in my back mirror, both as an employee and a customer.
No one your allowed to interact with at Amazon will be working at Amazon 2 to 3 years from now. Amazon is a meat grinder.
Good luck making progress with people that are not invested in ensuring their finicky employer resolves your issue. They won't be here to deal with the economic fallout of these decisions.