i havea clifford call guard installed in my car, but unforunatly due to family issues and other things i have not had the time to sent it a text just to keep the sim card running. any way i rang orange today and they have connected me back up, but every time i send the call guard a command it does not respond to it. am i doing some thing wrong or do i need a new sim in it. the command at the mo i am using is 1234 bv# battery volt and i have used other commands help please or am i just typing it in the tex wrong with spaces thanks