It keeps showing that the service is not available.
I tried changing the amazon account but it doesn't work.
What should I do?
yeah...stop being a jacka** and making prank calls.
I work at an IT Help Desk and lemme tell you, you are among the lowest of the low to prank call people who are just there trying to help other people.
Literally, that is what they are there for, to help people and you are prank calling them.
On top of it all, it is a FREE service that Amazon provides. FREE. If people like you keep doing this do you think they'll keep it free.