Stranded with no airtime on new contract after 17 years!!!!!!

<p>I upgraded to a sim only (my iPhone is perfect) but still a contract as to never run out of airtime like prepaid!!! Today started off where I got message that my vodamail was cancelled - what the ****** hell!!!!! And after a VERY nice lady sorted that for me I drove home tonight with my 2 little girls in the car and all of a sudden Vodacom says - sorry no airtime!!!!! How the hell is that possible on a new contract from tomorrow,for 300 minutes per month and till today 3000 minutes that stocked up - hence the reason for smaller package!!!! I could not phone security company to escort home as hubby is away and if ANYTHING went wrong in the road - WHAT THE DONNER must I do???? After 17 years of loyal and never missed payment how can this be HAPPENING???????????????????</p> <p> </p>