At Amazon internal transfers don't work by clicking the "Apply" button. You reach out to the hiring manager first and have a coffee together, then if that goes well they setup the internal loop, if that goes well the hiring manager tells you to apply and you get the job. You don't apply until after you have it.

If you need the money you should probably take any job you could get. Customer support is not exactly a natural stepping stone, but its extremely hard to advance your career if you don't have enough money to survive.