Vodafone — deactivation of Outgoing call facility

i am a customer of Hutch for almost 5 years.From my Vodafone number without no reason, outgoing calls have been deactivated. I have provided all the details over phone to the Customer Care executive Ms Riya & Mr Yogesh regarding my cheque clearance, But still my outging calls are barred.I had paid my bill due on my Vodafone No: [protected] dated 12/5/2008 amounting to Rs 2831.50/- vide ch No: 022515 of Centurian Bank of Punjab dated 30/4/2008 and it is clared from my bank a/c on 3/5/2008.This is the worst type of customer service. Iam bearing this inconvenience for no reason.