Vodafone India — i want to deactivate my postpaid vodafone no. which i am not using anymore.

Address:

Pune, Maharashtra

I was living in pune working in sassoon hospital pune. Then i was using vodafone postpaid sim card. I am not using that sim now. And i am shifted to mumbai. I hav requested for deactivation of my sim. But i am getting the monthly bill for that no. On my email. Last month i paid the bill and requested for deactivation again. But still i got an email for bill. I called to vodafone store. They asked me to come to pune or any vodafone center in maharashtra but not bombay to deactivate the no. Which i can't do just for this reason only. Tell me how can i do this from mumbai or online. Thanks.