Asterisk + FreePBX + A2Billing api connection with the website

Our company sells voip minutes. We have an server with Asterisk + FreePBX + A2Billing installed. We need to make api connections with our voip retail website. If the customer does one of the following actions on the company website, the api will automatically do the same on the Asterisk + FreePBX + A2Billing server. These actions include; - Create a new user with a new username and password - Reset the user's password - Change the user's password - Automatically increase customers balance when new purchases are made - Show the available balance of the user - Show the call history of the user This is basically everything about this project. Please ask if you have any questions.