Development of devices on Arduino

Offering additional earnings for a specialist in device development on Arduino. Devices are required for Arduino - GSM - GPRS management.
1. Three devices on a microcontroller with SIM cards (One main (#No1), two driven (#No2, #No3))
2. The main device (#No1) receives an SMS message about the accrual of bonus X points for the device #No with junk text, such as: "Congratulations, the device # 500 points for purchases from partners";
The controller checks the sender number of the message and checks it against the array of numbers allowed for processing;
If the number is in the array of allowed - allocates #No devices on the mask, checks whether the No# corresponds to the registered in the array of devices;
If yes, it will enter the phone number assigned to the device in the variable sending number;
- allocates the numerical value of balls on the mask;
sends to the number of this device # message type: $ 500 " - where 500 is the number of bonuses received in the message by the head device, and $ is as an identifier, after which you need to extract the numerical value (organize check for spaces and the presence of other symbols between $ and the number). If there are any, stop the program.
3. The #No controller selects the numerical value of the message and generates a given number of identical pulses (with a given frequency and amplitude) on a specific pin.