Vodafone India — wrong charges

Address:	Vadodara, Gujarat, 390007
Website:	Vodafone

We are customers of vodafone since the start - more than 12 years. My relationship number has two mobile numbers both under the same plan - one is mine and the other of my wife. Both numbers have plan red499 which has unlimited talktime, 100 free sms per month and free internet usage. The only value added services we are subscribed to is 'missed call intimation'. We have not subscribed to any other services.
Both numbers are also on dnd (Although we keep getting unwanted calls as well as sms).
On 30th november, we got a message that my wife's number is activated for topdoctorsonline service and a 20 days rental of rs100 has been deducted. I have been allocated a special service representative but of late since more than a month, my calls to the number are neither answered nor responded.
A few months back they had wrongly billed me for value added services amounting to over rs 800/- the first time they asked me to pay and promised a refund which they did in the next bill. However after a month again i was billed for over rs 800 for value added service. Again i was told to pay and await for a refund. However, this time no refund came.
Since then the allocated customer service representative is not responding.
Now again this excess billing has started and i am afraid that they will again not refund.
We are both senior citizens and i am physically handicapped - hence not able to run around to vodafone centers to keep on complaining every now and then.
Please help to get a refund and stoppage of this harassment.