In order to stop Amazon from using your internet, you need to first identify the device or devices that are connected to your network. Once you have identified these devices, you can then disable any access points or routers used by them. Additionally, if Amazon is using your Wi-Fi signal, you can secure it by changing the default password and setting up a strong encryption method such as WPA2. Finally, if applicable for your network setup, you can configure firewall settings to block all traffic from Amazon specific IP addresses.