Vodafone — Unable to make call from Vodafone number

Since morning today, I am unable to make any outgoing calls. Every number I dial it says the number is invalid. I am receiving calls and my plan is valid till 05th May. Tried calling the customer representative but was unable to reach them as the call gets disconnected as soon as I am transferred to the customer rep. I am located in aurangabad, maharashtra. My number is [protected]. I need urgent assistance please.