Vodafone India — reactivation of mobile services without consent

Address:

641045

I'd raised a service request for deactivation of my postpaid service on 14 jul '17 at the vodafone store, sungam, coimbatore. This was duly acknowledged by the store representative who had registered my service request and promised that my services will be deactivated 7 days from the request date (14 jul '17). I'd made the payment of all the outstanding as on 14 jul '17.
But the bill has been generated for my service. On reaching out to the customer care on 21st sep '17, the customer care representative had agreed that my service was reactivated on 28 jul '17. She had also said that a complaint will be registered against the store and i need not pay the current bill amount.
I keep getting reminders for payment of the dues. Why am i expected to pay for a service that has been deactivated and reactivated without my consent due to the lethargic attitude of the service provider?